Mounting evidence from animal studies suggests that Omicron does not multiply readily in lung tissue, which can be badly damaged in people infected with other variants.
The latest results could mean that “the virus establishes a very local infection in the upper airways and has less chance to go and wreak havoc in the lungs”, Ott says. That would be welcome news — but
plays an important part in disease severity, and scientists need more clinical data if they are to understand how Omicron’s basic biology influences its disease progression in humans., says Audrey John, a specialist in paediatric infectious disease at the Children’s Hospital of Philadelphia in Pennsylvania. Young children have relatively small nasal passages, and babies breathe only through their noses.
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