One month after COVID-19 vaccination, compared with J&J recipients, nAB levels were 51 times higher among Moderna recipients and 21 times higher among Pfizer recipients. At 6 months, however, J&J vaccinees produced the same antibody response as that of Moderna and significantly higher concentrations than those of Pfizer.
As this long emergency period expires, experts say, the biggest impact for consumers will be the end of free coronavirus tests — both at-home tests and those performed by clinicians and analyzed by commercial labs — with broad implications for people’s ability to get timely covid diagnoses, prevent disease transmission and track the virus.
Two studies published today measure the vaccine effectiveness (VE) of COVID-19 vaccines against laboratory-confirmed Omicron variant and subvariants and symptomatic disease. Vaccines that target the newer variants performed well, but primary vaccines offered rapidly waning protection from SARS-CoV-2 infections in the post-Omicron era.
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