J&J COVID-19 vaccine is 'LESS EFFECTIVE against Delta variant'
J&J COVID-19 vaccine is 'LESS EFFECTIVE against Delta variant' Mary Kekatos Acting U.S. Health Editor For Dailymail.Com © Provided by Daily Mail MailOnline logo The Johnson & Johnson COVID-19 vaccine is less effective against the Indian 'Delta' coronavirus variant than other shots, a new study suggests. Researchers found that antibody levels from people who received the one-dose vaccine were twice as low compared to those given the two-dose Pfizer-BioNTech or Moderna vaccines. The team says the findings add to the growing body of evidence that the 13 million Americans w...