Hospitals

Reinfection, severe outcome more common with BA.5 variant; virus spike protein toxic to heart cells Compared with the earlier Omicron BA.2 subvariant, currently dominant Omicron BA.5 is linked with higher odds of causing a second SARS-COV-2 infection regardless of vaccination status, a study from Portugal suggests. Further, they found, in infected heart muscle cells only the SARS-CoV-2 spike interacted with so-called TLR4 proteins (Toll-like receptor-4) that recognize invaders and trigger inflammatory responses. YahooNews

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BA.5 variant’s spread sparks concerns about contagiousness, hospitalizations Concerns are rising over a new omicron subvariant that is even more highly transmissible, called BA.5.  The new subvariant has risen to be a majority of COVID-19 cases in the United States and… vmorris The Hill

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BA.5 causes concern because of its increased contagiousness and because of its greater ability to evade the protection from vaccines and prior infection.