U.S. respiratory virus levels continue their decline but shift seen in JN.1 mutations--CDC
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Evidence from past outbreaks indicates that this strain, called clade I, is more lethal than the separate strain that sparked the 2022 outbreak. Clade I has for decades caused small outbreaks, often limited to a few households or communities, in Central Africa. Sexually acquired clade I infections had not been reported before last year.
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Amidst the anticipated increase in vaccine-preventable diseases as the global population ages, a first-of-its-kind study has underscored the dual benefits of adult immunization programs.
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Antibody levels fell to low or near zero within the first few months of getting the vaccine, unless the person had previously received a smallpox vaccine, scientists reported Saturday at the European Congress of Clinical Microbiology and Infectious Diseases in Barcelona.
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Transmission rates are still far below levels from 2022, when there were tens of thousands of cases in the US. But after a quieter year last year, experts say the US is vulnerable to increases in spread in a number of ways.
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That suggests that it was changes in gay and bisexual men's sexual behaviors, not the vaccine, that caused the outbreak to subside, researchers concluded.
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The World Health Organization (WHO) has approved another COVID-19 vaccine for emergency use listing (EUL): Corbevax, a recombinant protein–based vaccine developed by scientists at Texas Children's Hospital and Baylor College of Medicine.
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“This is the first definitive proof of sexual transmission of monkeypox in Africa,” Oyewale Tomori, a Nigerian virologist who sits on several WHO advisory groups, said. “The idea that this kind of transmission could not be happening here has now been debunked.”
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COVID metrics showed more declines last week, though deaths from the virus—one of its severity indicators—rose 4.2% compared to the previous week, the Centers for Disease Control and Prevention (CDC) said in its latest data update. Deaths were up a bit in a number of states but were up more sharply in Oregon.