What is the pathogen of SARS?

Dec 02, 2025 Source: Cainiu Health

Dr. Ren Yi

Introduction

The pathogen of SARS is the severe acute respiratory syndrome coronavirus, which belongs to the genus Coronavirus in the family Coronaviridae. This virus has high transmissibility and pathogenicity and primarily causes acute respiratory infections in humans. If symptoms resembling SARS, such as fever, dry cough, and difficulty breathing, occur, it is recommended to seek medical attention promptly for evaluation and diagnosis.

The pathogen of SARS is the severe acute respiratory syndrome coronavirus (SARS-CoV), which belongs to the genus Coronavirus in the family Coronaviridae. This virus is highly contagious and pathogenic, primarily causing acute respiratory infections in humans. If symptoms similar to SARS—such as fever, dry cough, and difficulty breathing—occur, prompt medical evaluation and screening are recommended.

Severe acute respiratory syndrome coronavirus is a single-stranded positive-sense RNA virus. The viral particles are spherical or elliptical with crown-like projections on the surface. Its genetic sequence is unique and significantly different from other coronaviruses, allowing definitive diagnosis through methods such as nucleic acid testing.

The virus mainly spreads via respiratory droplets and can also be transmitted indirectly through contact with contaminated objects. The general population is susceptible. After infection, the incubation period typically lasts 2 to 10 days. Symptoms may include high fever, fatigue, and muscle pain. In severe cases, respiratory failure can occur.

To reduce infection risk, maintain good indoor ventilation, wash hands frequently and practice hand hygiene, avoid crowded places, wear masks properly when outdoors, maintain social distancing, engage in regular physical exercise to boost immunity, and develop sound hygiene habits.

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Can you eat beef if infected with the novel coronavirus?

In general, it is acceptable to eat beef after contracting the novel coronavirus, but in moderation. Beef is a good source of high-quality protein. During a COVID-19 infection, the body requires substantial energy and nutrients to fight the virus and repair damaged tissues. Consuming moderate amounts of beef can provide high-quality protein, help maintain normal physiological functions, enhance immune function, and promote recovery.

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What does a negative or positive nucleic acid test for COVID-19 mean?

In general, a positive nucleic acid test for COVID-19 indicates detection of SARS-CoV-2 infection, while a negative result means the virus was not detected or is present at very low levels. Both results should be interpreted in light of individual circumstances. Regardless of the test outcome, individuals should maintain daily protective measures, including wearing masks, practicing frequent hand hygiene, and avoiding large gatherings. Those testing positive should actively cooperate with epidemic control measures.

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How long did the SARS virus last?

In November 2002, the first case of SARS was identified in Guangdong Province, China. The virus quickly spread to multiple countries and regions. In the spring of 2003, the outbreak peaked, with over 8,000 confirmed cases reported worldwide and 774 deaths. During this period, countries implemented strict public health measures, including isolation, quarantine, and travel restrictions.

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What virus causes novel coronavirus infection?

In general, novel coronavirus infection is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). It is important to maintain personal protection in daily life, wear masks when going out, and avoid crowded places. Wash hands frequently to maintain hand hygiene, regularly open windows for ventilation indoors to ensure air circulation. Maintain a balanced diet to ensure adequate nutrition, and follow a regular作息 routine to avoid excessive fatigue.