Author: Hung Le

The coronaviruses are pathogens that can cause upper respiratory tract infections in both children and adults. These viruses usually come from animals. Once transmitted to a human, they can spread person-to-person via respiratory droplets. These viruses were responsible for the SARS epidemic over a decade...

The flu(influenza) is a contagious respiratory illness caused by viruses that spread mostly from person to person. Early symptoms can include fever, chills, sore throat, and body aches. For most people, the flu resolves on its own, but sometimes, the flu and its complications can...