All coverage
Pfizer is testing a third Covid vaccine dose in young kids, delaying trial results
By Berkeley Lovelace & Berkeley Lovelace Jr.
CDC advisory panel, concerned about rare side effects tied to J&J vaccine, gives preferential nod to mRNA shots
By Helen Branswell
CDC narrows use of J&J vaccine due to concerns about rare blood clots
By Scott Hensley & Vanessa Romo
CDC recommends Pfizer, Moderna vaccines over Johnson & Johnson, citing rare blood-clot issue
By Lena Sun & Frances Stead Sellers
CDC recommends people not get J&J vaccine if Pfizer, Moderna are available
By Berkeley Lovelace, Sara G. Miller & Berkeley Lovelace Jr.
Pfizer says pandemic could extend through 2023, studies three-dose vaccine course for children
By Clara-Læïla Laudette & Conor Humphries
Pfizer's child-sized vaccine fails to produce expected immunity in younger kids; company adds third dose to trials
By Virginia Langmaid & Maggie Fox
Pfizer says pandemic could extend to 2024, vaccine data for younger children delayed
By Michael Erman & Mrinalika Roy
CDC recommends Pfizer, Moderna vaccines over J&J shots for adults due to rare blood clot cases
By Sevanny Campos & Spencer Kimball
The tragedy of Johnson & Johnson's Covid vaccine
By Matthew Herper