The Centers for Disease Control and Prevention (CDC) said on April 14 that it learned of a seventh woman who developed a rare and severe type of blood clot after receiving the Johnson & Johnson (J&J) COVID-19 vaccine. The seventh possible patient was identified as a 28-year-old woman, as the Advisory Committee on Immunization Practices debates whether the J&J vaccine should be used. The committee said more information is needed to make an informed recommendation. Several million doses of the J&J vaccine have been administered so far, meaning that the risk of developing clots appears to be extremely low. Earlier this week, the CDC and the Food and Drug Administration (FDA) recommended pausing usage of the J&J single-shot vaccine. It came after six cases of blood clots were reported. “We do need to better understand the risk, which we know is going to be very rare, very low, but we …