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SARS-CoV-2 Omicron-B.1.1.529 leads to widespread escape from neutralizing antibody responses

The Recommended Dietary Allowance (RDA) for vitamin B12 varies by age and condition: Adults: 2.4 mcg/day Pregnant women: 2.6 mcg/day Breastfeeding women: 2.8 mcg/day However, injection dosages are significantly higher and vary depending on the individuals condition

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During pregnancy, vitamin B 12 is concentrated in the fetus and stored in the liver.17 18 Infants born to vitamin B 12 -replete mothers have stores of vitamin B 12 that are adequate to sustain them for the first several months postpartum