Human body weight is a person's mass or weight.
The UK statutory notification system for infectious diseases is a system whereby doctors are required to notify a "proper officer" of the local authority if they are presented with a case of a serious infectious disease such as diphtheria or measles. The proper officer then sends a report to the Centre for Infections of the Health Protection Agency (HPA) in Colindale, north London.
In public health, contact tracing is the process of identifying people who may have been exposed to an infected person ("contacts") and subsequent collection of further data to assess transmission. By tracing the contacts of infected individuals, testing them for infection, and isolating or treating the infected, this public health tool aims to reduce infections in the population. In addition to infection control, contact tracing serves as a means to identify high-risk and medically vulnerable populations who might be exposed to infection and facilitate appropriate medical care. In doing so, public health officials utilize contact tracing to conduct disease surveillance and prevent outbreaks. In cases of diseases of uncertain infectious potential, contact tracing is also sometimes performed to learn about disease characteristics, including infectiousness. Contact tracing is not always the most efficient method of addressing infectious disease. In areas of high disease prevalence, screening or focused testing may be more cost-effective.
Public health surveillance is, according to the World Health Organization (WHO), "the continuous, systematic collection, analysis and interpretation of health-related data needed for the planning, implementation, and evaluation of public health practice." Public health surveillance may be used to track emerging health-related issues at an early stage and find active solutions in a timely manner. Surveillance systems are generally called upon to provide information regarding when and where health problems are occurring and who is affected.
Public health informatics has been defined as the systematic application of information and computer science and technology to public health practice, research, and learning. It is one of the subdomains of health informatics.
Disease surveillance is an epidemiological practice by which the spread of disease is monitored in order to establish patterns of progression. The main role of disease surveillance is to predict, observe, and minimize the harm caused by outbreak, epidemic, and pandemic situations, as well as increase knowledge about which factors contribute to such circumstances. A key part of modern disease surveillance is the practice of disease case reporting.
A notifiable disease is any disease that is required by law to be reported to government authorities. The collation of information allows the authorities to monitor the disease, and provides early warning of possible outbreaks. In the case of livestock diseases, there may also be the legal requirement to kill the infected livestock upon notification. Many governments have enacted regulations for reporting of both human and animal diseases.
The Centers for Disease Control and Prevention (CDC), formed in 1946, is the leading national public health institute of the United States. It is a United States federal agency, under the United States Department of Health and Human Services. Its main goal is to protect public health and safety through the control and prevention of disease, injury, and disability in the US and internationally.
Tele-epidemiology is the application of telecommunications to epidemiological research and application, including space-based and internet-based systems.
Surveillance for communicable diseases is the main public health surveillance activity in China. Currently, the disease surveillance system in China has three major components:
Influenza-like illness (ILI), also known as flu-like syndrome or flu-like symptoms, is a medical diagnosis of possible influenza or other illness causing a set of common symptoms. These include fever, shivering, chills, malaise, dry cough, loss of appetite, body aches, nausea, and sneezing typically in connection with a sudden onset of illness. In most cases, the symptoms are caused by cytokines released by immune system activation, and are thus relatively non-specific.
The Nigeria Centre for Disease Control and Prevention (NCDC) is the national public health institute for Nigeria. It is a federal government agency under the Federal Ministry of Health (Nigeria), with its headquarters in Abuja, Federal Capital Territory.
A notifiable disease is one which that has to be reported to the government authorities as required by law. In Sweden, over 50 diseases are classified as notifiable. The notifiable diseases come under four categories : notifiable, mandatory contact tracing required, dangerous to public health (allmänsfarliga) and dangerous to the society (samhällsfarliga). As per the Swedish law, notifiable diseases should be reported by the laboratories, doctor treating the patient or performing autopsy. The report is sent through an electronic system called SmiNet to the Public Health Agency of Sweden. As of January 2018, the only three diseases classified as dangerous to society are small pox, Ebola and severe acute respiratory syndrome (SARS).
The Health Protection Surveillance Centre (HPSC) is part of Ireland's Health Service Executive.
Coronavirus disease 2019 (COVID-19) is a contagious disease caused by the coronavirus SARS-CoV-2. The first known case was identified in Wuhan, China, in December 2019. Most scientists believe the SARS-CoV-2 virus entered into human populations through natural zoonosis, similar to the SARS-CoV-1 and MERS-CoV outbreaks, and consistent with other pandemics in human history. Social and environmental factors including climate change, natural ecosystem destruction and wildlife trade increased the likelihood of such zoonotic spillover. The disease quickly spread worldwide, resulting in the COVID-19 pandemic.
COVID-19 testing involves analyzing samples to assess the current or past presence of SARS-CoV-2, the virus that cases COVID-19 and is responsible for the COVID-19 pandemic. The two main types of tests detect either the presence of the virus or antibodies produced in response to infection. Molecular tests for viral presence through its molecular components are used to diagnose individual cases and to allow public health authorities to trace and contain outbreaks. Antibody tests instead show whether someone once had the disease. They are less useful for diagnosing current infections because antibodies may not develop for weeks after infection. It is used to assess disease prevalence, which aids the estimation of the infection fatality rate.
COVID-19 surveillance involves monitoring the spread of the coronavirus disease in order to establish the patterns of disease progression. The World Health Organization (WHO) recommends active surveillance, with focus of case finding, testing and contact tracing in all transmission scenarios. COVID-19 surveillance is expected to monitor epidemiological trends, rapidly detect new cases, and based on this information, provide epidemiological information to conduct risk assessment and guide disease preparedness.
In epidemiology, particularly in the discussion of infectious disease dynamics (modeling), the latent period is the time interval between when an individual or host is infected by a pathogen and when that individual becomes infectious, i.e. capable of transmitting pathogens to other susceptible individuals.
Multisystem inflammatory syndrome in children (MIS-C), or paediatric inflammatory multisystem syndrome, or systemic inflammatory syndrome in COVID-19 (SISCoV), is a rare systemic illness involving persistent fever and extreme inflammation following exposure to SARS-CoV-2, the virus responsible for COVID-19. Studies suggest that MIS-C occurred in 31.6 out of 100,000 people under 21 who were infected with COVID-19. MIS-C has also been monitored as a potential, rare pediatric adverse event following COVID-19 vaccination. Research suggests that COVID-19 vaccination lowers the risk of MIS-C, and in cases where symptoms develop after vaccine, is likely extremely rare or related to factors like recent exposure to COVID-19. It can rapidly lead to medical emergencies such as insufficient blood flow around the body. Failure of one or more organs can occur. A warning sign is unexplained persistent fever with severe symptoms following exposure to COVID-19. Prompt referral to paediatric specialists is essential, and families need to seek urgent medical assistance. Most affected children will need intensive care.
Andrea Ammon is a German physician and the former director of the European Centre for Disease Prevention and Control (ECDC), a European Union (EU) agency strengthening Europe's defence against infectious disease. She advised the German government on the SARS and Influenza A virus subtype H2N2 outbreaks.
