An unvaccinated teacher in a California elementary school infected half her students and 26 people in total when she contracted the COVID-19 Delta variant, researchers for the US Centers for Disease Control and Prevention (CDC) found.
Coronavirus
The Guardian: Unvaccinated teacher infected half her students with COVID, CDC finds
This undated handout image obtained March 28, 2021, courtesy of The National Institue of Allergy and Infectious Diseases/ NIH shows a transmission electron microscope image of SARS-CoV-2, the virus that causes Covid-19, isolated from a patient in the US, as virus particles are shown emerging from the surface of cells cultured in the lab, the spikes on the outer edge of the virus particles give coronaviruses their name, crown-like - The novel coronavirus has killed at least 2,777,761 people since the outbreak emerged in China in December 2019, according to a tally from official sources compiled by AFP at 10H00 GMT on March 28, 2021.
