FILE PHOTO: Colorized scanning electron micrograph of an apoptotic cell (greenish brown) heavily infected with SARS-COV-2 virus particles (pink), also known as novel coronavirus, isolated from a patient sample. Image captured and color-enhanced at the NIAID Integrated Research Facility (IRF) in Fort Detrick, Maryland. National Institute of Allergy and Infectious Diseases, NIH/Handout via REUTERS.
SYDNEY (Reuters) - As the coronavirus SARS-CoV-2 has swept across the world, killing more than 1.5 million people over the past year, it has mutated into seven major groups, or strains, as it adapted to its human hosts.
Mapping and understanding those changes to the virus is crucial to developing strategies to combat the COVID-19 disease it causes.
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