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Transmission

Medical researchers strongly believe that SARS virus spreads by person-to-person contact. The virus is commonly transmitted by respiratory droplets while one sneezes and coughs. When one sneezes, the virus may infect people in vicinity up to three feet.

One may also get infected when one touches a surface contaminated with the droplets and sequentially touches one's mouth, nose, or face. Furthermore, some researchers state that the virus may be airborne.

Stages of SARS


 


In step (1), a SARS virus enters a host cell and releases its RNA strand into the cell.

In step (2), the RNA strand goes through RNA translation, producing proteins and vital genetic information needed to replicate the virus.

In step (3), proteins produced from the RNA translation may affect the host cell's golgi apparatus, triggering the production of virions. Later, the virions will come out of the cell by membrane fusion.

In step (4), the newly generated RNA strand and necessary proteins assemble together to form a new virus.

Steps (1-4) repeat as the virus infects another host cell.

 

Symptoms