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Follow-up investigations in the US and other nations and by the company have not found the same increase.
State health officials say the strain, which had reduced susceptibility to the last remaining recommended antibiotic treatment, is a serious public health concern.
Operation Warp Speed deployed five phase 3 COVID-19 vaccine clinical trials involving 136,000 participants, a new report reveals.
Poor outcomes include illness and death, bacterial infections, more ICU days, and serious conditions such as preeclampsia.
Also, officials detail outbreaks in poultry globally, and 3 more grizzlies are infected in Montana.
Risk factors for persistent symptoms at 28 days included being unvaccinated at infection, moderate or severe acute illness, longer hospital stays, and underlying health conditions.
The WHO welcomed the new details, but asked for a breakdown by province and more SARS-CoV-2 sequences.
Also, separate reports from the WHO and Europe show declines in cases, with countries and regions reflecting differences in subvariant proportions.
Those least likely to receive at least 4 doses were Black, previously had COVID-19, or were on high-dose corticosteroids.
The authors say the findings indicate that the protection conferred by previous infection should not detract from the need for vaccination.
