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Coronavirus disease 2019 (COVID-19) is a contagious disease caused by the coronavirus SARS-CoV-2. The disease spread worldwide, resulting in the COVID-19 pandemic . The symptoms of COVID‑19 can vary but often include fever, [ 7 ] fatigue, cough, breathing difficulties , loss of smell , and loss of taste .
The COVID-19 pandemic has also been associated with mental health challenges for those who are not infected with it, including the social and economic impacts of quarantine, physical distancing, stay-at-home orders, gathering bans, nonessential business closures, and additional measures introduced to reduce community transmission of the virus. [81]
On 21 May, the WHO and the UN refugee agency (UNHCR) signed a new pact, an update, and expansion of a 1997 agreement, funded by the COVID-19 Solidarity Response Fund, to better protect approximately 70 million people affected by COVID-19 in low and middle-income countries with vulnerable health systems.
During the 2002–2004 SARS outbreak, the SARS-CoV-1 virus was prevented from causing a pandemic of Severe acute respiratory syndrome (SARS). Rapid action by national and international health authorities such as the World Health Organization helped to slow transmission and eventually broke the chain of transmission, which ended the localized epidemics before they could become a pandemic.
For the coronavirus in particular, rapid testing remains a key tool in helping tamp down transmission. Officials say guests, even those who feel fine, should consider testing the day of an event ...
How COVID‑19 vaccines work. The video shows the process of vaccination, from injection with RNA or viral vector vaccines, to uptake and translation, and on to immune system stimulation and effect. Part of a series on the COVID-19 pandemic Scientifically accurate atomic model of the external structure of SARS-CoV-2. Each "ball" is an atom. COVID-19 (disease) SARS-CoV-2 (virus) Cases Deaths ...
Your Covid-19 vaccine card should be included as part of your medical record, similar to your personal vaccination record, experts say. That way, the card can be used as proof of vaccination when ...