Vaccination requirements for international travel

Last updated

Vaccination requirements for international travel are the aspect of vaccination policy that concerns the movement of people across borders. Countries around the world require travellers departing to other countries, or arriving from other countries, to be vaccinated against certain infectious diseases in order to prevent epidemics. At border checks, these travellers are required to show proof of vaccination against specific diseases; the most widely used vaccination record is the International Certificate of Vaccination or Prophylaxis (ICVP or Carte Jaune/Yellow Card). Some countries require information about a passenger's vaccination status in a passenger locator form.[ citation needed ]

Contents

Historic requirements

Smallpox (1944–1981)

The first International Certificate of Vaccination against Smallpox was developed by the 1944 International Sanitary Convention [1] (itself an amendment of the 1926 International Sanitary Convention on Maritime Navigation and the 1933 International Sanitary Convention for Aerial Navigation). [2] The initial certificate was valid for a maximum of three years. [1]

The policy had a few flaws: the smallpox vaccination certificates were not always checked by qualified airport personnel, or when passengers transferred at airports in smallpox-free countries. Travel agencies mistakenly provided certificates to some unvaccinated customers, and there were some instances of falsified documents. Lastly, a small number of passengers carrying valid certificates still contracted smallpox because they were improperly vaccinated. However, all experts agree that the mandatory possession of vaccination certificates significantly increased the number of travellers who were vaccinated, and thus contributed to preventing the spread of smallpox, especially when the rapid expansion of air travel in the 1960s and 1970s reduced the travelling time from endemic countries to all other countries to just a few hours. [1]

After smallpox was successfully eradicated in 1980, the International Certificate of Vaccination against Smallpox was cancelled in 1981, and the new 1983 form lacked any provision for smallpox vaccination. [1]

Current requirements

Yellow fever

Vaccination against yellow fever ten days before entering this country/territory is required for travellers coming from ...
.mw-parser-output .legend{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .legend-color{display:inline-block;min-width:1.25em;height:1.25em;line-height:1.25;margin:1px 0;text-align:center;border:1px solid black;background-color:transparent;color:black}.mw-parser-output .legend-text{}
All countries
Risk countries (including airport transfers)
Risk countries (excluding airport transfers)
No requirement (risk country)
No requirement (non-risk country) Yellow fever vaccination travel requirements map.svg
Vaccination against yellow fever ten days before entering this country/territory is required for travellers coming from ...
  All countries
  Risk countries (including airport transfers)
  Risk countries (excluding airport transfers)
  No requirement (risk country)
  No requirement (non-risk country)

Travellers who wish to enter certain countries or territories must be vaccinated against yellow fever ten days before crossing the border, and be able to present a vaccination record/certificate at the border checks. [3] :45 In most cases, this travel requirement depends on whether the country they are travelling from has been designated by the World Health Organization as being a "country with risk of yellow fever transmission". In a few countries, it does not matter which country the traveller comes from: everyone who wants to enter these countries must be vaccinated against yellow fever. There are exemptions for newborn children; in most cases, any child who is at least nine months or one year old needs to be vaccinated. [4]

Polio

Polio vaccination is required for travellers ...
From all countries, to all countries
From some countries, to all countries
From some countries, to all countries
From some countries, to some countries
To some countries
From some countries Polio vaccination travel requirements map.svg
Polio vaccination is required for travellers ...
  From all countries, to all countries
  From some countries, to all countries
  From some countries, to all countries
  From some countries, to some countries
  To some countries
  From some countries

Travellers who wish to enter or leave certain countries must be vaccinated against polio, usually at most twelve months and at least four weeks before crossing the border, and be able to present a vaccination record/certificate at the border checks. [3] :25–27 Most requirements apply only to travel to or from so-called polio-endemic, polio-affected, polio-exporting, polio-transmission, or "high-risk" countries. [4] As of August 2020, Afghanistan and Pakistan are the only polio-endemic countries in the world (where wild polio has not yet been eradicated). [5] Several countries have additional precautionary polio vaccination travel requirements, for example to and from "key at-risk countries", which as of December 2020 include China, Indonesia, Mozambique, Myanmar, and Papua New Guinea. [4] [6]

Meningococcal meningitis

Travellers need to show proof of meningococcal vaccination ...
Upon arrival in the Hajj and Umrah zones (foreign and domestic pilgrims, workers, and residents of Mecca and Medina)
Before departure to Hajj and Umrah in Saudi Arabia, and to certain African countries
Before departure to and upon arrival from Saudi Arabia
Before departure to Hajj and Umrah in Saudi Arabia
Upon arrival
African meningitis belt: vaccination recommended for visitors Meningococcal vaccination travel requirements map.svg
Travellers need to show proof of meningococcal vaccination ...
  Upon arrival in the Hajj and Umrah zones (foreign and domestic pilgrims, workers, and residents of Mecca and Medina)
  Before departure to Hajj and Umrah in Saudi Arabia, and to certain African countries
  Before departure to and upon arrival from Saudi Arabia
  Before departure to Hajj and Umrah in Saudi Arabia
  Upon arrival
   African meningitis belt: vaccination recommended for visitors

Travellers who wish to enter or leave certain countries or territories must be vaccinated against meningococcal meningitis, preferably 10–14 days before crossing the border, and be able to present a vaccination record/certificate at the border checks. [3] :21–24 Countries with required meningococcal vaccination for travellers include The Gambia, Indonesia, Lebanon, Libya, the Philippines, and most importantly and extensively Saudi Arabia for Muslims visiting or working in Mecca and Medina during the Hajj or Umrah pilgrimages. [4] For some countries in African meningitis belt, vaccinations prior to entry are not required, but highly recommended. [3] :21–24

COVID-19

Scott Morrison: "People have the choice of two weeks of quarantine or being vaccinated." Kunjungan Perdana Menteri Australia Scott Morrison ke Indonesia (43682148384) (cropped).jpg
Scott Morrison: "People have the choice of two weeks of quarantine or being vaccinated."

During the COVID-19 pandemic, several COVID-19 vaccines were developed, and in December 2020 the first vaccination campaign was planned. [8]

Anticipating the vaccine, on 23 November 2020, Qantas announced that the company would ask for proof of COVID-19 vaccination from international travellers. According to Alan Joyce, the firm's CEO, a coronavirus vaccine would become a "necessity" when travelling, "We are looking at changing our terms and conditions to say for international travellers, we will ask people to have a vaccination before they can get on the aircraft." [9] Australian Prime Minister Scott Morrison subsequently announced that all international travellers who fly to Australia without proof of a COVID-19 vaccination will be required to quarantine at their own expense. [7] Victoria Premier Daniel Andrews and the CEOs of Melbourne Airport, Brisbane Airport and Flight Centre all supported the Morrison government's "no jab, no fly" policy, with only Sydney Airport's CEO suggesting advanced testing might also be sufficient to eliminate quarantine in the future. [10] The International Air Transport Association (IATA) announced that it was almost finished with developing a digital health pass which states air passengers' COVID-19 testing and vaccination information to airlines and governments. [11]

Korean Air and Air New Zealand were seriously considering mandatory vaccination as well, but would negotiate it with their respective governments. [12] KLM CEO Pieter Elbers responded on 24 November that KLM does not yet have any plans for mandatory vaccination on its flights. [13] Brussels Airlines and Lufthansa said they had no plans yet on requiring passengers to present proof of vaccination before boarding, but Brussels Airport CEO Arnaud Feist agreed with Qantas' policy, stating: "Sooner or later, having proof of vaccination or a negative test will become compulsory." [14] Ryanair announced it would not require proof of vaccination for air travel within the EU, EasyJet stated it would not require any proof at all. The Irish Times commented that a vaccination certificate for flying was quite common in countries around the world for other diseases, such as for yellow fever in many African countries. [15]

CommonPass logo CommonPass Logo.png
CommonPass logo

On 25 November, separately from IATA's digital health pass initiative, five major airlines – United Airlines, Lufthansa, Virgin Atlantic, Swiss International Air Lines, and JetBlue – announced the 1 December 2020 introduction of the CommonPass, which shows the results of passengers' COVID-19 tests. It was designed as an international standard by the World Economic Forum and The Commons Project, and set up in such a way that it could also be used to record vaccination results in the future. It standardises test results and aims to prevent forgery of vaccination records, while storing only limited data on a passenger's phone to safeguard their privacy. The CommonPass had already successfully undergone a trial period in October with United Airlines and Cathay Pacific Airways. [16] [17]

On 26 November, the Danish Ministry of Health confirmed that it was working on a COVID-19 "vaccine passport" or simply Vaccination card [18] which would likely not only work as proof of vaccination for air travel, but also for other activities such as concerts, private parties and access to various businesses, a perspective welcomed by the Confederation of Danish Industry. The Danish College of General Practitioners also welcomed the project, saying that it doesn't force anyone to vaccinate, but encourages them to do so if they want to enjoy certain privileges in society. [19]

Irish Foreign Minister Simon Coveney said on 27 November 2020 that, although he "currently has no plans" for a passport vaccination stamp, his government was working on changing the passenger locator form to include proof of PCR negative tests for the coronavirus, and that it was likely to be further adjusted to include vaccination data when a COVID-19 vaccine would become available. Coveney stressed that "We do not want, following enormous efforts and sacrifices from people, to reintroduce the virus again through international travel, which is a danger if it is not managed right." [20]

IATA Travel Pass app

The IATA Travel Pass application for smartphone has been developed by the International Air Transport Association (IATA) in early 2021. The mobile app standardizes the health verification process confirming whether passengers have been vaccinated against, or tested negative for, COVID-19 prior to travel. Passengers will use the app to create a digital passport linked to their e-passport, receive test results and vaccination details from laboratories, and share that information with airlines and authorities. The application is intended to replace the existing paper-based method of providing proof of vaccination in international travel, colloquially known as the Yellow Card . Trials of the application are carried out by a number of airlines including Singapore Airlines, Emirates, Qatar Airways, Etihad and Air New Zealand. [21] [22]

It has been opined that many countries will increasingly consider the vaccination status of travellers [23] when deciding to allow them entry or not or require them to quarantine [24] since recently published research shows that the Pfizer vaccine effect lasts for at least six months. [25]

Recommendations

Various vaccines are not legally required for travellers, but highly recommended by the World Health Organization. [3] For example, for areas with risk of meningococcal meningitis infection in countries in African meningitis belt, vaccinations prior to entry are not required by these countries, but nevertheless highly recommended by the WHO. [3] :21–24

As of July 2019, ebola vaccines and malaria vaccines were still in development and not yet recommended for travellers. [3] :4 Instead, the WHO recommends various other means of prevention, including several forms of chemoprophylaxis, in areas where there is a significant risk of becoming infected with malaria. [26] :4–5

See also

Notes

  1. Also required for travellers having transited (more than 12 hours) through a risk country's airport.
  2. Not required for travellers having transited through a risk country's airport.
  3. The WHO has designated (parts of) Argentina, Brazil and Peru as risk countries, but these countries do not require incoming travellers to vaccinate against yellow fever.

Related Research Articles

<span class="mw-page-title-main">Vaccination</span> Administration of a vaccine to protect against disease

Vaccination is the administration of a vaccine to help the immune system develop immunity from a disease. Vaccines contain a microorganism or virus in a weakened, live or killed state, or proteins or toxins from the organism. In stimulating the body's adaptive immunity, they help prevent sickness from an infectious disease. When a sufficiently large percentage of a population has been vaccinated, herd immunity results. Herd immunity protects those who may be immunocompromised and cannot get a vaccine because even a weakened version would harm them. The effectiveness of vaccination has been widely studied and verified. Vaccination is the most effective method of preventing infectious diseases; widespread immunity due to vaccination is largely responsible for the worldwide eradication of smallpox and the elimination of diseases such as polio and tetanus from much of the world. However, some diseases, such as measles outbreaks in America, have seen rising cases due to relatively low vaccination rates in the 2010s – attributed, in part, to vaccine hesitancy. According to the World Health Organization, vaccination prevents 3.5–5 million deaths per year.

<span class="mw-page-title-main">Polio vaccine</span> Vaccine to prevent poliomyelitis

Polio vaccines are vaccines used to prevent poliomyelitis (polio). Two types are used: an inactivated poliovirus given by injection (IPV) and a weakened poliovirus given by mouth (OPV). The World Health Organization (WHO) recommends all children be fully vaccinated against polio. The two vaccines have eliminated polio from most of the world, and reduced the number of cases reported each year from an estimated 350,000 in 1988 to 33 in 2018.

The Pet Travel Scheme ("PETS") is a system which allows animals to travel easily between member countries without undergoing quarantine. A pet passport is a document that officially records information related to a specific animal, as part of that procedure. The effect is to drastically speed up and simplify travel with and transport of animals between member countries, compared to previous procedures if the regulations are followed.

<span class="mw-page-title-main">Travel document</span> Identity document issued by a government or international entity

A travel document is an identity document issued by a government or international entity pursuant to international agreements to enable individuals to clear border control measures. Travel documents usually assure other governments that the bearer may return to the issuing country, and are often issued in booklet form to allow other governments to place visas as well as entry and exit stamps into them.

<span class="mw-page-title-main">International Certificate of Vaccination or Prophylaxis</span> International certificate of vaccination

The International Certificate of Vaccination or Prophylaxis (ICVP), also known as the Carte Jaune or Yellow Card, is an official vaccination report created by the World Health Organization (WHO). As a travel document, it is a kind of medical passport that is recognised internationally and may be required for entry to certain countries where there are increased health risks for travellers.

<span class="mw-page-title-main">Travel requirements for Polish citizens</span> Administrative entry restrictions

Travel requirements for Polish citizens are public health and administrative entry restrictions by the authorities of other states placed on citizens of Poland.

A vaccination policy is a health policy adopted in order to prevent the spread of infectious disease. These policies are generally put into place by State or local governments, but may also be set by private facilities, such as workplaces or schools. Many policies have been developed and implemented since vaccines were first made widely available.

Mass vaccination is a public policy effort to vaccinate a large number of people, possibly the entire population of the world or of a country or region, within a short period of time. This policy may be directed during a pandemic, when there is a localized outbreak or scare of a disease for which a vaccine exists, or when a new vaccine is invented.

<span class="mw-page-title-main">Timatic</span> Passenger database for international air travel

Timatic is a database containing documentation requirements for passengers traveling internationally via air, e.g. passport and visa requirements. Timatic, an abbreviation for Travel Information Manual Automatic, is used by airlines and their representatives, airport staff, and travel agents to determine whether a passenger can be carried, as well as by airlines and travel agents to provide this information to travellers at the time of booking. This is critical for airlines due to the fines levied by immigration authorities every time a passenger is carried who does not have the correct travel documentation, as well as the airline's costs to return the incorrectly-boarded passenger to the original airport from which the passenger departed.

<span class="mw-page-title-main">Yellow fever vaccine</span> Vaccine that protects against yellow fever

Yellow fever vaccine is a vaccine that protects against yellow fever. Yellow fever is a viral infection that occurs in Africa and South America. Most people begin to develop immunity within ten days of vaccination and 99% are protected within one month, and this appears to be lifelong. The vaccine can be used to control outbreaks of disease. It is given either by injection into a muscle or just under the skin.

<span class="mw-page-title-main">Visa requirements for French citizens</span> Administrative entry restrictions

Travel requirements for French citizens are public health and administrative entry restrictions by the authorities of other states placed on citizens of France. As of January 2024, French citizens had visa-free or visa on arrival access to 194 countries and territories, ranking the French passport 1st in terms of travel freedom, according to the Henley Passport Index.

<span class="mw-page-title-main">Visa policy of Singapore</span> Policy on permits required to enter Singapore

The visa policy of Singapore deals with the requirements a traveller must meet to enter Singapore. A foreign national, depending on their country of origin, must meet certain requirements to obtain a visa, which is a permit to travel, to enter and remain in the country. A visa may also entitle the visa holder to other privileges, such as a right to work, study, etc. and may be subject to conditions.

<span class="mw-page-title-main">Impact of the COVID-19 pandemic on commercial air transport</span> Impact of COVID-19

The COVID-19 pandemic has had a significant impact on the airline industry due to travel restrictions and a decimation in demand among travelers.

<span class="mw-page-title-main">Immunity passport</span> Medical record for travel purposes

An immunity passport, immunity certificate, health pass or release certificate is a document, whether in paper or digital format, attesting that its bearer has a degree of immunity to a contagious disease. Public certification is an action that governments can take to mitigate an epidemic.

Trials to assess the effectiveness of an immunity passport scheme, also known as a COVID passport or COVID certification scheme, were confirmed by the UK government on 3 April 2021 as a way of helping to restart public events in England during the COVID-19 pandemic. The announcement was made following much discussion and speculation about the idea by politicians and in the British media. The government announced that trials of a scheme for England would begin on 16 April, starting with a comedy evening in Liverpool.

<span class="mw-page-title-main">COVID-19 vaccine card</span> Medical record for COVID-19 vaccination

A COVID-19 vaccine card is a record often given to those who have received a COVID-19 vaccine showing information such as the date(s) one has received the shot(s) and the brand of vaccine one has received, sometimes including the lot number. The card also contains information identifying the recipient and the location where the shot was given. Depending on the country, it could serve as an official document verifying one has received vaccination, which could be required by some institutions, such as a school or workplace, when boarding a cruise ship, or when crossing an international border, as proof that one has been vaccinated.

<span class="mw-page-title-main">COVID-19 vaccination mandates in the United States</span> Mandates for people to receive the COVID-19 vaccine in the U.S.

Over the course of the COVID-19 pandemic, COVID-19 vaccine mandates have been enacted by numerous states and municipalities in the United States, and also by private entities. In September 2021, President Joe Biden announced that the federal government would take steps to mandate COVID-19 vaccination for certain entities under the authority of the federal government or federal agencies. Most federal mandates thus imposed were either overturned through litigation, or withdrawn by the administration, although a mandate on health care workers in institutions receiving Medicare and Medicaid funds was upheld. All federal mandates were lifted when the national emergency was declared to have ended in May 2023. A small number of states have gone in the opposite direction, through executive orders or legislation designed to limit vaccination mandates.

<span class="mw-page-title-main">Vaccine passports during the COVID-19 pandemic</span> Use of immunity passports for COVID-19 vaccination

A vaccine passport or proof of vaccination is an immunity passport employed as a credential in countries and jurisdictions as part of efforts to control the COVID-19 pandemic via vaccination. A vaccine passport is typically issued by a government or health authority, and usually consists of a digital or printed record. Some credentials may include a scannable QR code, which can also be provisioned via mobile app. It may or may not use a COVID-19 vaccine card as a basis of authentication.

<span class="mw-page-title-main">Visa requirements for German citizens</span> Administrative entry restrictions

Travel requirements for German citizens are public health and administrative entry restrictions by the authorities of other states placed on citizens of Germany.
As of 9 January 2024, German citizens had visa-free or visa on arrival access to 194 countries and territories. Ranking the German passport 1st in terms of travel freedom, and tied with the greatest access of all European Union member states along with France, Italy, and Spain, according to the Henley Passport Index.

COVID-19 vaccination mandates in Canada are the responsibility of provinces, territories, and municipalities, and in the case of federal public services and federally-regulated transportation industries, the federal government. COVID-19 vaccines are free in Canada through the public health care system. The federal government is responsible for procurement and distribution of the vaccines to provincial and territorial authorities; provincial and territorial governments are responsible for administering vaccinations to people in their respective jurisdictions. Mass vaccination efforts began across Canada on December 14, 2020. As the second vaccinations became more widely available in June 2021, Manitoba became the first province in Canada to offer a voluntary vaccine passport.

References

  1. 1 2 3 4 Fenner, F.; Henderson, D.A.; Arita, I.; Jezek, Z.; Ladnyi, I.D. (1988). "Chapter 7: Developments in vaccinatino and control between 1900 and 1966". Smallpox and its eradication (PDF). World Health Organization. p. 312. ISBN   92-4-156110-6 . Retrieved 4 December 2020.
  2. Whiteman, Marjorie Millace (1968). Digest of International Law. Volume 9. Washington, D.C.: U.S. Department of State. p. 1202. Retrieved 4 December 2020.
  3. 1 2 3 4 5 6 7 "International Travel and Health. Chapter 6 – Vaccine-preventable diseases and vaccines (2019 update)" (PDF). World Health Organization. United Nations. 2020. Retrieved 3 December 2020.
  4. 1 2 3 4 "Countries with risk of yellow fever transmission and countries requiring yellow fever vaccination (July 2019)". World Health Organization. United Nations. 4 July 2019. Retrieved 3 December 2020.
  5. Scherbel-Ball, Naomi (25 August 2020). "Africa declared free of polio". BBC News. Archived from the original on 26 August 2020. Retrieved 25 August 2020.
  6. "Key At-Risk Countries". Global Polio Eradication Initiative. World Health Organization. Retrieved 2 December 2020.
  7. 1 2 Samantha Maiden (25 November 2020). "PM Scott Morrison signals tough new COVID-19 vaccine rules for international travellers who fly to Australia". News.com.au. Retrieved 25 November 2020.
  8. Heather Stewart, Sarah Boseley and Daniel Boffey (2 December 2020). "Covid vaccinations will begin next week, says Boris Johnson". The Guardian. Retrieved 3 December 2020.
  9. Phillip Georgiadis (23 November 2020). "Qantas to demand proof of Covid vaccination from international passengers". Financial Times . Retrieved 23 November 2020.
  10. Patrick Hatch (26 November 2020). "'No jab, no fly': COVID-19 vaccine key to opening borders, travel leaders say". The Sydney Morning Herald. Retrieved 28 November 2020.
  11. Cameron Jenkins (24 November 2020). "Airlines discussing requiring proof of COVID-19 vaccination for passengers: report". The Hill. Retrieved 24 November 2020.
  12. "Airlines mull mandatory COVID-19 vaccines for int'l passengers". Aljazeera. 24 November 2020. Retrieved 24 November 2020.
  13. "KLM: No plans to make Covid vaccine mandatory; May need more gov't support". NLTimes. 24 November 2020. Retrieved 24 November 2020.
  14. "Brussels Airlines will not make proof of coronavirus vaccination mandatory". The Brussels Times. 24 November 2020. Retrieved 25 November 2020.
  15. Conor Pope (24 November 2020). "Covid jab: Ryanair will not ask for proof of vaccination within EU". The Irish Times. Retrieved 25 November 2020.
  16. Grace Dean (25 November 2020). "5 major airlines are rolling out shared digital health passes to prove negative COVID-19 tests. They hope it's a step towards recovery for an industry set to lose $157 billion". Business Insider. Retrieved 28 November 2020.
  17. John Gapper (25 November 2020). "Those who get vaccinated deserve more freedom". Financial Times. Retrieved 28 November 2020.
  18. vaccinationcard.info (20 March 2021). "COVID Vaccination Card – Information and Resources". vaccinationcard.info. Retrieved 28 March 2021.
  19. "Danish health ministry to develop Covid-19 'vaccine passport'". The Local DK. 26 November 2020. Retrieved 28 November 2020.
  20. Marie O'Halloran (27 November 2020). "System being planned to allow vaccinated airline passengers avoid restrictions". The Irish Times. Retrieved 28 November 2020.
  21. Hendry, Justin (22 February 2021). "Air New Zealand to trial digital health pass app on Sydney-Auckland route". itnews.com.au. nextmedia Pty Ltd. Retrieved 17 March 2021.
  22. "IATA Travel Pass for Travelers". iata.org. IATA. Archived from the original on 15 March 2021. Retrieved 17 March 2021.
  23. Osumi, Magdalena (19 March 2021). "'Vaccine passports' could help global travel resume". The Japan Times. Retrieved 6 April 2021. With the COVID-19 vaccine rollout gearing up across the globe, expectations are rising for the restart of international travel. And so that travellers can move safely from one country to another without spreading the virus, Japan and other nations are looking to introduce a system of vaccine passports. On Tuesday, the European Commission proposed a Digital Green Certificate system that will show if a person has been vaccinated against COVID-19, received a negative test result or recovered from COVID-19. The U.S. and the U.K. are also looking into similar systems.
  24. Pitrelli, Monica Buchanan (14 January 2021). "No vaccine, no service: How vaccinations may affect travel plans in the future". Global Traveller. CNBC. Retrieved 6 April 2021. Though no country has announced a mandatory vaccination requirement yet, it's 'very possible' that some will once vaccinations become freely available, said Sharona Hoffman, co-director of the Law-Medicine Center at Case Western Reserve University School of Law. I would guess that New Zealand might be a country that would require proof of vaccination for travel purposes, she said, citing the country's rigid travel ban and low Covid-19 infection rate. Hoffman said countries will have to balance the need for tourist income with the inherent coronavirus risks that travellers bring with them.
  25. Ian, Sample (1 April 2021). "Pfizer vaccine has 91% efficacy for up to six months, trial shows". The Guardian. Retrieved 3 April 2021. He said scientists had become 'terribly worried' about the variant's ability to evade immunity from previous infection or vaccination. 'Studies like this confirm our sense that the vaccine gives such massive protective headroom that even with some loss of immunity, you're still safe,' he said.
  26. "Vaccination requirements and recommendations for international travellers; and malaria situation per country – 2020 edition". World Health Organization. 11 August 2020. Retrieved 4 December 2020.