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  • LOS ANGELES, CALIFORNIA - MARCH 25: One shot doses of the Johnson & Johnson COVID-19 vaccine are prepared at a clinic targeting immigrant community members on March 25, 2021 in Los Angeles, California. The clinic, run by the St. John's Well Child and Family Center, estimates it has vaccinated more than 100,000 people in the Los Angeles area amid reports of two undocumented women who were refused coronavirus vaccinations in Orange County Rite Aid stores. Rite Aid has called the refusals mistakes in a written statement. (Photo by Mario Tama/Getty Images)

    CDC and FDA recommend US pause use of Johnson & Johnson's Covid-19 vaccine over blood clot concerns

  • Federal official: CDC, FDA taking reports of blood clots and J&J Covid-19 vaccine 'seriously'

  • B.1.1.7 variant more transmissible, but does not increase disease severity, two new studies suggest