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During a period of delta predominance, protection was lower among vaccinated persons without a previous COVID-19 diagnosis.
In New England and the Pacific, prevalence tended to be lower, whereas higher prevalence was seen in the South, Midwest and West.
Further, vaccinated people were at lower risk of long-term breathing difficulties than unvaccinated individuals.
A reduced risk of hospitalization or death was seen at 28 days; a lower risk was seen for all individual mAb products.
Higher levels of Ruminococcus gnavus, Bacteroides vulgatus, and lower levels of Faecalibacterium prausnitzii were observed in patients with PACS.
The lower screening rates for cervical, breast and colorectal cancers suggest a “pattern of forgone care,” according to the researchers.
The rate of hospitalization due to COVID-19 and death was reduced for treated versus untreated patients among those aged 65 years and older.
Predictions are likely to become more accurate as researchers learn more about omicron.
Mortality rates were lower for omicron BA.2 than for the delta variant and omicron B.1.1.529.
Adjusted hazard ratios for hospitalization and death were reduced with both treatments.