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Lower risk of COVID-19 in babies vaccinated during pregnancy

WEDNESDAY, June 1, 2022 (HealthDay News) — Mothers who have been given a second or third dose of the COVID-19 vaccine during pregnancy have a lower risk of COVID-19 during the first four months of life, during which There is less risk. Delta variant-dominated period, according to a study published online June 1 JAMA Internal Medicine,

Alain Karlsson, PhD, of the Norwegian Institute of Public Health in Oslo, and colleagues investigated whether COVID-19 vaccination in pregnancy is associated with a lower risk of COVD-19 in infants up to 4 months of age during delta- and omicron-dominant Duration. A total of 21,643 live infants were included in the register-based cohort study.

Researchers found that 45.0 percent of babies born alive were born to women who received a second or third dose of the COVID-19 vaccine during pregnancy. The incidence rate of a positive test for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was 5.8 per 10,000 follow-up days in the first four months of life. Compared to infants of non-vaccinated mothers, infants of mothers who were vaccinated during pregnancy have a lower risk of testing positive, and the delta type-prime period is at lower risk than during the omicron period (incidence rate: 1.2 versus 3.0 per 10,000 follow-up days) [adjusted hazard ratio, 0.29] during the delta dominance period and 7.0 versus 10.9 per 10,000 follow-up days [adjusted hazard ratio, 0.67] during the Omicron dominance period).

“The findings of this study provide preliminary evidence to suggest that infants benefit from passive protection against SARS-CoV-2 infection following maternal COVID-19 vaccination during pregnancy,” the authors write.

abstract/full text

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