On Friday, White House health adviser Dr. Anthony Fauci had a vital message for Americans who have gotten their first dose of the Moderna or Pfizer coronavirus vaccine: Don’t skip your second shot. About 8% of people nationwide who have received one dose of the Pfizer or Moderna vaccine have not returned for their second dose, Fauci said Friday. That’s normal compared to what health experts have seen with other multidose vaccines. But skipping a second dose will not be as effective in preventing the spread and providing the complete protection needed against the virus that has killed more than 576,000 ...