Archive · 16 Nov 2025
23 Years Ago, SARS Emerged as a Precursor to COVID-19
Imagine a nasty flu-like sickness called SARS that appeared a long time ago, even before COVID-19.
It started in China with just one person in late 2002.
This sickness spread to many countries, making over 8,000 people sick and causing about 774 deaths worldwide.
In India, only a few people got sick, and thankfully, no one died from it.
Doctors learned a lot from SARS, like how to track sick people and improve their hospitals.
This experience helped them react faster when COVID-19 showed up later.
SARS was easier to stop because people were most sick when they were already in the hospital, unlike COVID-19 which can spread easily even when someone feels fine.
It taught us that we need to be careful with animals and nature to prevent new sicknesses from spreading.
SARS, a virus related to COVID-19, first emerged in southern China in November 2002.
The outbreak eventually affected over 8,000 people across 28 countries, resulting in 774 deaths.
India reported three confirmed SARS cases, with no associated deaths.
SARS served as an important precursor to COVID-19, informing public health responses and surveillance systems.
Unlike COVID-19, SARS was more infectious when patients were severely ill, making it somewhat easier to contain.
- Who
- Humans infected with the Severe Acute Respiratory Syndrome (SARS) coronavirus.
- What
- The emergence and spread of Severe Acute Respiratory Syndrome (SARS), a virus related to COVID-19, and its global impact, including a limited effect on India.
- When
- The first known case emerged in November 2002, with global awareness growing in early 2003. A brief resurgence occurred in early 2004.
- Where
- The first known case emerged in southern China. It spread to 28 countries globally.
- Why
- The virus is believed to have originated from animal hosts, likely transmitted to humans through wildlife markets, highlighting risks of animal-to-human transmission.
- First Known Case
- November 2002
- Global Alert Issued
- March 12, 2003
- Official Naming (CDC)
- March 15, 2003
- Confirmed Cause (Coronavirus)
- March 24, 2003
- Total Global Cases
- Over 8,000
- Total Global Deaths
- 774
- Case-Fatality Rate
- 9.6%
- Confirmed SARS Cases in India
- 3
- Deaths from SARS in India
- 0