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  • Severe Acute Respiratory Syndrome (SARS) - World Health Organization (WHO)
    Severe acute respiratory syndrome (SARS) is a viral respiratory disease caused by a SARS-coronavirus While SARS cases were detected as early as November 2002 as part of an outbreak that emerged in China and subsequently spread to 28 other countries, the pathogen causing the disease was identified as a coronavirus at the end of February 2003
  • Severe Acute Respiratory Syndrome (SARS) - World Health Organization (WHO)
    Severe acute respiratory syndrome (SARS) is a viral respiratory disease caused by a SARS-associated coronavirus
  • Risk evaluation for SARS-CoV-2 Variant Under Monitoring: LP. 8. 1
    LP 8 1 is currently one of two SARS-CoV-2 variants under monitoring (VUM) with increasing prevalence globally, the other being XEC Considering the available evidence, the additional public health risk posed by LP 8 1 is evaluated as low at the global level The recommended COVID-19 vaccines are expected to remain cross-reactive to this variant
  • SARS-CoV-2 Evolution - World Health Organization (WHO)
    SARS-CoV-2, the virus which causes COVID-19, tends to change more slowly than others such as HIV or influenza viruses This could in part be explained by the virus’s internal “proofreading mechanism” which can correct “mistakes” when it makes copies of itself Scientists continue to study this mechanism to better understand how it works
  • SARS outbreak contained worldwide - World Health Organization (WHO)
    Today, the World Health Organization is removing Taiwan, China, from the list of areas with recent local transmission of severe acute respiratory syndrome (SARS) Taiwan is the last area to be removed from the list It has been 20 days, or two consecutive 10-day incubation periods, since the last case on June 15 Based on country surveillance reports, the human chains of SARS virus
  • Severe Acute Respiratory Syndrome (SARS) - multi-country outbreak . . .
    SARS is showing how the alert and response activity works in practice for a newly identified disease It also indicates how the system now in operation could apply to other highly significant infectious disease events, including the next influenza pandemic, the next emerging infection, and the deliberate release of a biological agent in an act
  • COVID-19 epidemiological update – 24 December 2024
    SARS-CoV-2, the virus that causes COVID-19, largely circulates without clear seasonality and continues to infect, causing severe acute disease and post-COVID-19 condition The impact varies by country, and WHO's ability to monitor circulation, severity, and virus evolution is challenged by reduced surveillance, testing, sequencing, and limited integration into long-term prevention programs
  • COVID-19 epidemiological update – 14 March 2025
    Overview During the four-week reporting period from 6 January to 2 February 2025, weekly SARS-CoV-2 PCR percent test positivity changed from 7 3% in the beginning week of the reporting period to 5 0% in the last week, as detected in integrated sentinel and systematic virological surveillance within the Global Influenza Surveillance and Response System (GISRS)
  • Summary of probable SARS cases with onset of illness from 1 November . . .
    a Includes only cases whose death is attributed to SARS b Case classification by sex is unknown for 46 cases c Since 11 July 2003, 325 cases have been discarded in Taiwan, China Laboratory information was insufficient or incomplete for 135 discarded cases, of which 101 died d Includes HCWs who acquired illness in other areas e Due to
  • Types of data requested to inform May 2025 COVID-19 vaccine antigen . . .
    The WHO Technical Advisory Group on COVID-19 Vaccine Composition (TAG-CO-VAC) continues to closely monitor the genetic and antigenic evolution of SARS-CoV-2 variants, immune responses to SARS-CoV-2 infection and COVID-19 vaccination, and the performance of COVID-19 vaccines against circulating variants Based on these evaluations, WHO advises vaccine manufacturers and regulatory authorities on





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