Public health officials typically look to a few sources for warning signs of emerging disease. They study emerging viruses in animals that may transmit the infection to humans. However, determining which of the so many new viral variants represent a true danger is difficult. They also look for outbreaks of unexplained respiratory ailments, which was how SARS-CoV-2, the virus that causes COVID-19, was discovered in China late in 2019.from Healthcare/Biotech-Industry-Economic Times https://ift.tt/sCRpYiI
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