![]() | This article needs to be updated.(June 2021) |
![]() | The examples and perspective in this article may not represent a worldwide view of the subject.(November 2022) |
Part of a series on the |
COVID-19 pandemic |
---|
![]() |
|
![]() |
The COVID-19 pandemic has affected many scientific and technical institutions globally, resulting in lower productivity in a number of fields and programs. However, the impact of the pandemic has led to the opening of several new research funding lines for government agencies around the world. [1] [2] [3]
As a result of the COVID-19 pandemic, new and improved forms of scientific communication have evolved. One example is the amount of data being published on preprint servers and the way it has been reviewed on social media platforms before being formally peer reviewed. Scientists are reviewing, editing, analyzing, and publishing manuscripts and data speedily. [4] This intense communication may have enabled an unusual level of collaboration and efficiency among scientists. [5] Francis Collins notes that while he has not seen research move faster, the pace of research "can still feel slow" during a pandemic. The typical research model was considered too slow for the "urgency of the coronavirus threat". [6]
On the 4th of May, 2020, the World Health Organization (WHO) organized a telethon to raise US$8 billion from forty countries to support the rapid development of COVID-19 vaccines. [7] WHO also announced the implementation of an international "solidarity trial" to simultaneously evaluate multiple vaccine candidates reaching phase II-III clinical trials. [8] The "solidarity trial for treatments" is a multinational phase III-IV clinical trial, organized by WHO and its partners, to compare four untested treatments for hospitalized people with severe cases of COVID-19 disease. [9] [10] The trial was announced on March 18, 2020, [9] and by April 21, 2020. Over 100 countries have participated in the trial. [11] In addition, WHO is coordinating an international multisite randomized controlled trial—"solidarity trial for vaccines" [8] [12] —that will allow simultaneous assessment of the benefits and risks of different vaccine candidates being clinically tested in countries with high rates of COVID-19 disease. [8] The WHO Vaccine Coalition prioritizes which vaccines to include in phase II and III clinical trials, and establishes harmonized phase III protocols for all vaccines that reach the pivotal testing phase. [8]
The Coalition for Epidemic Preparedness Innovations (CEPI), which has established a US$2 billion global fund for rapid investment and development of vaccine candidates, [13] indicated in April 2020 that a vaccine could be available under protocols of emergency use in less than 12 months, or by early 2021. [14]
The seventh edition of the UNESCO Science Report , which monitors science policy and governance around the world, was in preparation as the COVID-19 pandemic began. As a result, the report documents some of the ways in which scientists, inventors, and governments used science to meet society's needs during the early stages of the pandemic. In the paper, What the COVID-19 Pandemic Reveals About the Evolving Landscape of Scientific Advice, the authors present five countries' case studies (Uruguay, Sri Lanka, Jamaica, Ghana, and New Zealand). The authors conclude, "Effective and trusted scientific advice is not simply a function of linkages with the policy-maker. It also involves an effective conversation with stakeholders and the public."
According to the World Health Organization, during the COVID-19 pandemic, Africa contributed 13% of the world's new or adapted technologies, such as robotics, 3D printing, and mobile phone apps. Many countries have accelerated their approval processes for research project proposals. For example, the innovation agencies of Argentina, Brazil, and Uruguay have issued calls for research proposals with an expedited approval process through early April 2020. Peru's two innovation agencies reduced their own response time to two weeks, as documented in the UNESCO Science Report (2021).
The UNESCO study of publication trends in 193 countries on the topic of new or re-emerging viruses that can infect humans covered the period from 2011 to 2019 and now provides an overview of the state of research prior to the COVID-19 pandemic. Global output on this broad topic increased by only 2% per year between 2011 and 2019, slower than overall global scientific publications. Growth was much higher in individual countries that had to use science to address other viral outbreaks during this period, such as Liberia to combat Ebola or Brazil to combat Zika fever. It remains to be seen whether or not the scientific landscape will shift toward a more proactive approach to health sciences after COVID-19.
The United States Department of Energy federal scientific laboratories, such as the Oak Ridge National Laboratory, closed to all visitors and many employees; non-essential employees and scientists became remote workers. Contractors are also strongly advised to isolate their facilities and employees unless necessary. Overall, ORNL operations remain reasonably unaffected. [15]
Lawrence Livermore National Laboratory has been tasked by the White House Coronavirus Task Force to use most of its supercomputing capacity to continue the research on the virus stream, possible mutations, and other factors, while other projects are temporarily scaled back or indefinitely postponed. [16]
The European Molecular Biology Laboratory has closed all six sites in Europe (Barcelona, Grenoble, Hamburg, Heidelberg, Hinxton, and Rome). All EMBL site governments have implemented strict controls in response to the coronavirus. EMBL staff have been instructed to follow the advice of local authorities. Several staff members have been given permission to work at the sites to provide essential services such as animal facility maintenance or data services. All other staff has been instructed to stay at home. EMBL has also cancelled all visits to the sites by groups outside the staff. This includes physical attendance at the Heidelberg course and conference program, EMBL-EBI training courses, and all other seminars, courses, and public visits at all sites. Meanwhile, the European Bioinformatics Institute has established a European COVID-19 platform for data/information exchange. The goal is to collect and share readily available research data to enable synergy, cross-fertilization, and use of different data sets with varying degrees of aggregation, validation, and/or completeness. The platform is envisioned to consist of two interconnected components, the SARS-CoV-2 data hubs, which will organize the flow of SARS-CoV-2 outbreak sequence data and enable comprehensive open data exchange for the European and global research community, and a more comprehensive COVID-19 portal. [17] [18] [19]
The World Meteorological Organization (WMO) has expressed concern about the effects of the pandemic on its monitoring system. Observations from the Aircraft Meteorological Data Relay program, which uses in-flight measurements from the fleets of 43 airlines, have been reduced by 50 to 80 percent depending on the region. Data from other automated systems have been virtually unaffected, although WMO is concerned that repairs and maintenance may be affected. Manual observations, mainly from developing countries, have also seen a significant decrease. [20]
The need to accelerate open scientific research prompted several civil society organizations to create an Open COVID-19 Pledge [21] [22] asking different industries to release their intellectual property rights during the pandemic to help find a cure for the disease. Several tech giants have joined the pledge, [23] which includes the release of an Open COVID license. [24] Long-time open access advocates such as Creative Commons have launched a myriad of calls and actions to promote open access in science as a key component to combat the disease. [25] [26] These include a public call for open access policies [27] and a call to scientists to adopt zero embargo periods for their publications, applying a CC BY to their articles and a CC0 waiver for research data. [28] Other organizations have challenged the current scientific culture, calling for more open and public science. [29]
For studies and information on coronavirus that can contribute to citizen science through open science, many other online resources are available on other open science and open access websites, including portals run by Cambridge University Press, [30] the Europe branch of the Scholarly Publishing and Academic Resources Coalition, [31] The Lancet , [32] John Wiley and Sons, [33] and Springer Nature. [34]
A JAMA Network Open study examined trends in oncology clinical trials initiated before and during the COVID-19 pandemic. It was noted that pandemic-related declines in clinical trials raised concerns about the potential negative impact on the development of new cancer therapies and the extent to which these findings could be applied to other diseases. [35]
![]() | This section needs to be updated.(November 2020) |
In March 2020, the United States Department of Energy, National Science Foundation, NASA, industry, and nine universities pooled resources to access supercomputers from IBM combined with cloud computing resources from Hewlett Packard Enterprise, Amazon, Microsoft, and Google for drug discovery. [36] [37]
The COVID‑19 High-Performance Computing Consortium also aims to predict the spread of disease, model possible vaccines, and study thousands of chemical compounds to develop a COVID‑19 vaccine or therapy. [36] [37] As of May 2020 [update] , the Consortium has used up 437 petaFLOPS of computing power.
The C3.ai Digital Transformation Institute, another consortium of Microsoft, six universities (including the Massachusetts Institute of Technology, a member of the first consortium), and the National Center for Supercomputer Applications in Illinois, operating under the auspices of C3.ai, founded by Thomas Siebel, is pooling supercomputing resources for drug discovery, developing medical protocols, and improving public health strategies, and awarded large grants through May 2020 to researchers proposing to use AI for similar tasks. [38] [39]
In March 2020, the Folding@home distributed computing project launched a program to support medical researchers around the world. The first wave of the project will simulate potential target proteins of SARS-CoV-2 and the related SARS-CoV virus, which has already been studied. [40] [41] [42] [43] [ needs update ]
In March, the Rosetta@home distributed computing project also joined the effort. The project uses volunteers' computers to model the proteins of the SARS-CoV-2 virus to discover potential drug targets or develop new proteins to neutralize the virus. The researchers announced that using Rosetta@home, they were able to "accurately predict the atomic-scale structure of an important coronavirus protein weeks before it could be measured in the lab." [44]
In May 2020, the Open Pandemics—COVID-19 partnership was launched between Scripps Research and IBM's World Community Grid. The partnership is a distributed computing project that "will automatically run a simulated experiment in the background [of connected home PCs] that will help predict the efficacy of a particular chemical compound as a potential treatment for COVID-19." [45]
Resources for informatics and scientific crowdsourcing projects on COVID-19 can be found on the internet or as apps. [46] [47] [48] Some examples of such projects are listed below:
The scientific community has held several machine learning competitions to identify false information related to the COVID-19 pandemic. Some examples are listed below:
NASA announced the temporary closure of all visitor complexes at its field centers until further notice and asked all non-critical personnel to work from home if possible. Production and manufacturing of the Space Launch System at the Michoud Assembly Facility has been halted, [65] [66] and further delays occurred for the James Webb Space Telescope, [67] although work resumed on June 3, 2020. [68]
The majority of Johnson Space Center personnel have transitioned to telecommunicating, and mission-critical personnel on the International Space Station have been ordered to reside in the mission control room until further notice. Station operations are relatively unaffected, but astronauts on new expeditions are subject to longer more stringent pre-flight quarantine. [69]
NASA's emergency response framework has varied based on local virus cases around its agency's field centers. As of March 24, 2020, the following space centers had moved to Stage 4. [70]
Two facilities were maintained at Stage 4 after reporting new cases of coronavirus: the Michoud Assembly Facility reported its first employee to test positive for COVID-19, and Stennis Space Center recorded the second case of a NASA community member with the virus. Kennedy Space Center maintained at Stage 3 after a workforce member tested positive. Due to the mandatory remote work policy already in place, the individual had not been on-site for more than a week before the onset of symptoms. [71] On May 18, the Michoud facility began resuming work operations on the SLS, but so far remains in a Level 3 status. [72]
At Level 4, mandatory remote work is in effect for all personnel except for limited personnel required for mission-critical work and to ensure and maintain the safety and security of the facility. [73]
This section needs additional citations for verification .(June 2020) |
The European Space Agency (ESA) has directed many of its science and technology facility personnel to telework whenever possible. [74]
Recent developments, including increased restrictions by national, regional, and local authorities across Europe and the first positive COVID-19 test result among European Space Operations Centre personnel, have led the agency to further restrict on-site personnel at its mission control centres.
ESA Director of Operations, Rolf Densing, has strongly advised mission personnel to reduce activity on science missions, especially on interplanetary spacecraft.
The affected spacecraft currently have stable orbits and long-duration missions, so turning off their science instruments and placing them into a largely unattended safety configuration for a certain period of time will have a negligible impact on their overall mission performance.
Examples of such missions include: [75]
ESA Science Director Günther Hasinger said: "It was a difficult decision, but the right one to take. Our greatest responsibility is the safety of people, and I know all of us in the science community understand why this is necessary."
The temporary reduction in on-site personnel will also allow the ESOC teams to focus on maintaining spacecraft safety for all other missions involved, especially the Mercury explorer BepiColombo, which is en route to the solar system's closest planet and would need on-site support during its planned April 10 flyby of Earth.
The difficult manoeuvre, which uses Earth's gravity to adjust BepiColombo's trajectory as it cruises towards Mercury, was performed by a very small number of engineers and with full respect to social distancing and other health and hygiene measures required by the current situation. Commissioning and initial checkout operations of the recently launched Solar Orbiter science instrument, which had begun last month, have been temporarily suspended.
ESA plans to resume these operations in the near future, depending on the development of the coronavirus situation. In the meantime, Solar Orbiter will continue its journey towards the Sun, with the first Venus flyby to take place in December. [76]
The space and science operations of the Japan Aerospace Exploration Agency (JAXA) were virtually unaffected. However, all visits to their many field centers have been suspended until April 30, 2020, to reduce contamination. [77] [78]
Bigelow Aerospace announced on March 23, 2020, that it was laying off all its 88 employees. It has said it would rehire the workers when pandemic restrictions were lifted. [79] Tucson, Arizona-based World View announced on April 17, 2020, that it had terminated new business initiatives and laid off an unspecified number of employees to reduce cash outflows. The company also received rent deferrals from Pima County, Arizona. [80]
OneWeb filed for bankruptcy on March 27, 2020, following a cash crunch due to difficulties in raising capital to complete construction and deployment of the remaining 90 percent of the network. The company had already laid off approximately 85 percent of its 531 employees, but said it will maintain operational satellite capabilities while the court restructures it and new owners for the constellation are sought. [81] [82]
Rocket Lab has temporarily closed its launch site in New Zealand, but operations continue at its Wallops Flight Facility launch complex. [83]
Major companies such as SpaceX and Boeing are not economically affected, except that they have taken extra precautions and security measures for their employees to limit the spread of the virus in their workplaces. As of April 16, Blue Origin said that it is continuing to hire staff, with about 20 more people added each week. [84] ULA has implemented an internal pandemic plan. Although some aspects of launch-related outreach have been scaled back, the company has made clear its intention to maintain its launch schedule. [85]
![]() | This section needs expansionwith: Not enough attention to the digital divide; needs more detail. You can help by adding to it. (November 2020) |
![]() | This section needs to be updated.(November 2020) |
From 2019 to 2020, the proportion of EU enterprises employing advanced digital technology in their operations expanded dramatically. From 2020 to 2021, this percentage remained relatively stable, reaching 61% in 2021, compared to 63% in 2020 and 58% in 2019. [87] [88] The pandemic has caused a huge strain on internet traffic, with BT Group and Vodafone seeing a 60 and 50 percent increase in broadband usage, respectively. At the same time, Netflix, Disney+, Google, Amazon, and YouTube have considered reducing the quality of their videos to avoid overload. In addition, Sony has begun to slow down PlayStation game downloads in Europe and the United States to maintain the traffic levels. [89] [90]
Cellular service providers in mainland China reported significant declines in subscribers, partially due to inability of migrant workers to return to work as a result of the quarantine lockdowns; China Mobile saw a reduction of 8 million subscribers, while China Unicom had 7.8 million fewer subscribers, and China Telecom lost 5.6 million users. [91]
Teleconferencing has been used to replace cancelled events as well as daily
business meetings and social contacts. Teleconference companies such as Zoom Video Communications have seen a sharp increase in usage, accompanied by technical issues such as bandwidth overcrowding and social problems such as Zoombombing. [93] [94] [95]
However, teleconferencing has also contributed to the development of distance education. [96]
Thanks to this technology, virtual happy hours for "quarantinis" (mixed drinks) [97] and even virtual dance parties have been organised. [98]
A survey conducted in 2021 found that while the coronavirus outbreak has boosted overall digitization, it has also widened the digital divide, specifically across firms. Leading businesses advanced digitization more frequently, but some enterprises fell behind and were less likely to convert digitally during the pandemic. [99] 53% of surveyed firms in the European Union had previously implemented advanced digital technology and invested more into other digital technologies. 34% of non-digital EU firms viewed the pandemic as a chance to begin investing in their digital transformation. [100] [101] According to the survey, 16% of EU enterprises regard to access to digital infrastructure to be a substantial barrier to investment. [102] [103] [104]
A growing digital divide is also emerging - in the United States, despite non-digital enterprises being more dynamic than in the European Union, 48% of enterprises that were non-digital before to the pandemic utilized the crisis to begin investing in digital technologies, compared to 64% of firms that had previously implemented advanced digital technology. [100] [105]
Digital infrastructure is essential for digital transformation. Many EU areas have the potential to enable investment in the digital transformation of firms by expanding access to faster internet. This influences organizations' decisions to go digital. [106] [107]
Across Europe, access to digital infrastructure is already increasing, with the great majority of homes now having access to broadband, but more has to be done to promote the spread of fast connections. There is a large proportion of enterprises citing digital infrastructure as a key barrier to investment and development across nations and regions. [108] [103] [104]
One out of every five businesses in the region of Europe and Central Asia launched or grew their online business or distribution of products and services, while one out of every four businesses started or increased their remote operations. [109] [110] [111] [112]
The pandemic has also hastened corporate transformation, with over 30% of companies altering or transforming their output as a result of it. Chemical manufacturers and wholesalers were the first to respond, with one in three expanding online business activity, beginning or boosting delivery of products and services, increasing remote employment, and changing manufacturing. [109] [113]
Across sub-regions, Russian companies reported the highest rate of digital transformation, with more than half of them beginning or growing online activity, products delivery, and remote work. [109]
Within Central, Eastern and Southeastern Europe, enterprises in Slovenia (48%) and Poland (44%), were the most innovative in 2022, while firms in Slovakia (14%), were the least innovative. 67% of enterprises in these regions deployed at least one sophisticated digital technology, the same as the current EU average (69%). [114]
The Academy of Military Medical Sciences (AMMS) of the PLA Academy of Military Science is a Chinese military medical research institute. It was established in Shanghai in 1951. It has been based in Beijing since 1958.
The Coalition for Epidemic Preparedness Innovations (CEPI) is a foundation that takes donations from public, private, philanthropic, and civil society organisations, to finance independent research projects to develop vaccines against emerging infectious diseases (EID).
The COVID-19 pandemic, also known as the coronavirus pandemic, is an ongoing global pandemic of coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The novel virus was first identified in an outbreak in the Chinese city of Wuhan in December 2019. Attempts to contain it there failed, allowing the virus to spread to other areas of Asia and later worldwide. The World Health Organization (WHO) declared the outbreak a public health emergency of international concern on 30 January 2020, and a pandemic on 11 March 2020. As of 26 February 2023, the pandemic had caused more than 675 million cases and 6.87 million confirmed deaths, making it one of the deadliest in history.
The global COVID-19 pandemic arrived in Europe with its first confirmed case in Bordeaux, France, on 24 January 2020, and subsequently spread widely across the continent. By 17 March 2020, every country in Europe had confirmed a case, and all have reported at least one death, with the exception of Vatican City.
A COVID‑19 vaccine is a vaccine intended to provide acquired immunity against severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2), the virus that causes coronavirus disease 2019 (COVID‑19).
The COVID-19 pandemic was confirmed to have reached Cyprus on 9 March 2020. Data released by the Cypriot government includes cases in the British Overseas Territory of Akrotiri and Dhekelia, but does not include cases in Northern Cyprus due to the long-running Cyprus dispute.
Media coverage of the COVID-19 pandemic has varied by country, time period and media outlet. News media has simultaneously kept viewers informed about current events related to the pandemic, and contributed to misinformation or fake news.
COVID-19 drug development is the research process to develop preventative therapeutic prescription drugs that would alleviate the severity of coronavirus disease 2019 (COVID-19). From early 2020 through 2021, several hundred drug companies, biotechnology firms, university research groups, and health organizations were developing therapeutic candidates for COVID-19 disease in various stages of preclinical or clinical research, with 419 potential COVID-19 drugs in clinical trials, as of April 2021.
An open-source ventilator is a disaster-situation ventilator made using a freely licensed (open-source) design, and ideally, freely available components and parts. Designs, components, and parts may be anywhere from completely reverse-engineered or completely new creations, components may be adaptations of various inexpensive existing products, and special hard-to-find and/or expensive parts may be 3D-printed instead of purchased. As of early 2020, the levels of documentation and testing of open-source ventilators was well below scientific and medical-grade standards.
COVID-19 apps include mobile-software applications for digital contact-tracing - i.e. the process of identifying persons ("contacts") who may have been in contact with an infected individual - deployed during the COVID-19 pandemic.
The World Health Organization (WHO) is a leading organisation involved in the global coordination for mitigating the COVID-19 pandemic within the broader United Nations response to the pandemic.
AD5-nCOV, trade-named Convidecia, is a single-dose viral vector vaccine for COVID-19 developed by CanSino Biologics. It conducted its Phase III trials in Argentina, Chile, Mexico, Pakistan, Russia, and Saudi Arabia with 40,000 participants.
The COVID-19 pandemic has had far-reaching economic consequences including the COVID-19 recession, the second largest global recession in recent history, decreased business in the services sector during the COVID-19 lockdowns, the 2020 stock market crash, which included the largest single-week stock market decline since the financial crisis of 2007–2008 and the impact of COVID-19 on financial markets, the 2021–2022 global supply chain crisis, the 2021–2022 inflation surge, shortages related to the COVID-19 pandemic including the 2020–present global chip shortage, panic buying, and price gouging. It led to governments providing an unprecedented amount of stimulus. The pandemic was also a factor in the 2021–2022 global energy crisis and 2022 food crises.
Science diplomacy is the collaborative efforts by local and global entities to solve global issues using science and technology as a base. In science diplomacy, collaboration takes place to advance science but science can also be used to facilitate diplomatic relations. This allows even conflicting nations to come together through science to find solutions to global issues. Global organizations, researchers, public health officials, countries, government officials, and clinicians have previously worked together to create effective measures of infection control and subsequent treatment. They continue to do so through sharing of resources, research data, ideas, and by putting into effect laws and regulations that can further advance scientific research. Without the collaborative efforts of such entities, the world would not have the vaccines and treatments we now possess for diseases that were once considered deadly such as tuberculosis, tetanus, polio, influenza, etc. Historically, science diplomacy has proved successful in diseases such as SARS, Ebola, Zika and continues to be relevant during the COVID-19 pandemic today.
BioNTech SE is a German biotechnology company based in Mainz that develops and manufactures active immunotherapies for patient-specific approaches to the treatment of diseases. It develops pharmaceutical candidates based on messenger ribonucleic acid (mRNA) for use as individualized cancer immunotherapies, as vaccines against infectious diseases and as protein replacement therapies for rare diseases, and also engineered cell therapy, novel antibodies and small molecule immunomodulators as treatment options for cancer.
Sputnik V or Gam-COVID-Vac is an adenovirus viral vector vaccine for COVID-19 developed by the Gamaleya Research Institute of Epidemiology and Microbiology in Russia. It is the world's first registered combination vector vaccine for the prevention of COVID-19, having been registered on 11 August 2020 by the Russian Ministry of Health.
Vaccine diplomacy, a form of medical diplomacy, is the use of vaccines to improve a country's diplomatic relationship and influence of other countries. Meanwhile, vaccine diplomacy also "means a set of diplomatic measures taken to ensure access to the best practices in the development of potential vaccines, to enhance bilateral and/or multilateral cooperation between countries in conducting joint R&D, and, in the case of the announcement of production, to ensure the signing of a contract for the purchase of the vaccine at the shortest term." Although primary discussed in the context of the supply of COVID-19 vaccines, it also played a part in the distribution of the smallpox vaccine.
Speed and scale are key to mitigation of COVID-19, due to the fat-tailed nature of pandemic risk and the exponential growth of COVID-19 infections. For mitigation to be effective, (a) chains of transmission must be broken as quickly as possible through screening and containment, (b) health care must be available to provide for the needs of those infected, and (c) contingencies must be in place to allow for effective rollout of (a) and (b).
SARS-CoV-2, the virus that causes COVID-19, was isolated in late 2019. Its genetic sequence was published on 11 January 2020, triggering the urgent international response to prepare for an outbreak and hasten development of a preventive COVID-19 vaccine. Since 2020, vaccine development has been expedited via unprecedented collaboration in the multinational pharmaceutical industry and between governments. By June 2020, tens of billions of dollars were invested by corporations, governments, international health organizations, and university research groups to develop dozens of vaccine candidates and prepare for global vaccination programs to immunize against COVID‑19 infection. According to the Coalition for Epidemic Preparedness Innovations (CEPI), the geographic distribution of COVID‑19 vaccine development shows North American entities to have about 40% of the activity, compared to 30% in Asia and Australia, 26% in Europe, and a few projects in South America and Africa.
Software for COVID-19 pandemic mitigation takes many forms. It includes mobile apps for contact tracing and notifications about infection risks, vaccine passports, software for enabling – or improving the effectiveness of – lockdowns and social distancing, Web software for the creation of related information services, and research and development software. A common issue is that few apps interoperate, reducing their effectiveness.
It is vital that we evaluate as many vaccines as possible as we cannot predict how many will turn out to be viable. To increase the chances of success (given the high level of attrition during vaccine development), we must test all candidate vaccines until they fail. WHO is working to ensure that all of them have the chance of being tested at the initial stage of development. The results for the efficacy of each vaccine are expected within three to six months and this evidence, combined with data on safety, will inform decisions about whether it can be used on a wider scale