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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
- COVID-19 - Global Situation - World Health Organization (WHO)
Since mid-February 2025, according to data available from sentinel sites, global SARS-CoV-2 activity has been increasing, with the test positivity rate reaching 11%, levels that have not been observed since July 2024 This rise is primarily observed in countries in the Eastern Mediterranean, South-East Asia, and Western Pacific regions Since early 2025, global SARS-CoV-2 variant trends have
- 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
- Severe Acute Respiratory Syndrome (SARS) - multi-country outbreak . . .
These recommendations were that SARS-affected areas, where transmission was known to be occurring in chains of human-to-human transmission, institute measures to identify international passengers who had signs, symptoms and history compatible with SARS, and to recommend that such persons postpone international travel and seek medical advice
- Severe Acute Respiratory Syndrome (SARS) - multi-country outbreak . . .
The ability to detect persons infected with the SARS virus at an early stage is a key measure of performance WHO has been concerned that weaknesses in earlier experimental tests for SARS would allow too many virus carriers to slip past undetected Existing PCR tests are very specific but may not detect all patients who are excreting coronavirus
- 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
- SARS-CoV-2 Evolution - World Health Organization (WHO)
SARS-CoV-2 spreads primarily through human-to-human transmission, but there is evidence of transmission between humans and animals Several animals like mink, dogs, domestic cats, lions, tigers and raccoon dogs have tested positive for SARS-CoV-2 after contact with infected humans
- 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)
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