The earliest case of severe acute respiratory syndrome (SARS) was repoed in –
**Core Concept**
The SARS outbreak in 2002-2003 was a global health emergency caused by a novel coronavirus, SARS-CoV. Understanding the origin and early cases of SARS is crucial for public health preparedness and response.
**Why the Correct Answer is Right**
The first reported case of severe acute respiratory syndrome (SARS) was a 66-year-old Chinese physician in Guangdong Province, China. This patient presented with atypical pneumonia and later developed severe respiratory failure. The SARS-CoV virus was likely transmitted from an animal source, possibly bats or palm civets, to humans through an intermediate host in the Guangdong province. The virus then spread to other parts of China and eventually globally.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the first reported case of SARS was not in Hong Kong, where the disease was later introduced and spread rapidly.
**Option B:** This option is incorrect because the first reported case of SARS was not in Singapore, which was also affected by the outbreak but not the initial epicenter.
**Option C:** This option is incorrect because the first reported case of SARS was not in Toronto, Canada, where a few cases were imported from China but not the earliest reported case.
**Clinical Pearl / High-Yield Fact**
The SARS outbreak highlighted the importance of global surveillance, rapid reporting, and collaboration in controlling infectious disease outbreaks. It also demonstrated the need for healthcare workers to take precautions when interacting with patients from areas with unknown or newly emerging infectious diseases.
**Correct Answer: A. Guangdong Province, China.**