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Tag: BA.1

Does prior omicron infection shield against future infection? Maybe not, new research finds

“This research highlights the need for continued vigilance and underscores the importance of ongoing preventive measures against COVID-19.”

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Some seniors infected with Omicron variants were more susceptible to reinfection, not less: McMaster study

In a sign that scientists still don’t fully understand how some COVID-19 variants manage to evade the immune system, a new Ontario study has found that retirement- and long-term-care home residents infected during the first Omicron wave were 20 times more likely to get reinfected by the virus than those who avoided a prior infection.

The surprising finding by researchers at McMaster University runs counter to the prevailing wisdom that a previous COVID infection affords protection against future infections, at least in the older adults who participated in the study.

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More than 70% of US household COVID spread started with a child, study suggests

According to a recent study, over 70% of nearly 850,000 US household COVID-19 transmissions originated with a child. The researchers concluded that children had an important role in the spread of SARS-CoV-2, and that in-person school also resulted in substantial spread.

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