Medical research

New measure of sperm age may be predictor of pregnancy success

A novel technique to measure the age of male sperm has the potential to predict the success and time it takes to become pregnant, according to a newly published study by researchers at the Wayne State University School of ...

Vaccination

Brazil green-lights Pfizer vaccine for kids 12 and up

Brazil's health regulator approved the Pfizer COVID-19 vaccine Friday for use in children aged 12 and up, though they will likely have to wait months in line for older age groups to be vaccinated first.

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