Mild illnesses include some cases of the common cold , while more lethal varieties can cause SARS, MERS, and COVID-19. Symptoms in other species vary: in chickens, they cause an upper respiratory tract disease, while in cows and pigs they cause diarrhea.
Google: Some employees are more likely to return to U.S. places of work in April
The search giant's move follows similar announcements from other tech firms.
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