A British scientific trial discovered no signal of hazard in getting a flu shot and a second dose of a Covid-19 vaccine on the identical time, outcomes that help the recommendation of U.S. well being authorities and are welcome information for strained well being care staff as flu season hits.
Within the research, medical doctors recruited 679 folks from April to June throughout Britain. On the time, the entire volunteers had acquired a primary dose of a Covid-19 vaccine, both from AstraZeneca or Pfizer-BioNTech, the 2 vaccines first approved there.
When the volunteers returned for a second vaccine dose, the researchers additionally gave half of them a flu shot and the opposite half a placebo. The researchers then monitored the volunteers for uncomfortable side effects, corresponding to aches and fevers.
“There aren’t any security considerations raised on this trial,” the authors wrote of their preliminary report, which was posted on-line on Thursday and has not but been printed in a scientific journal.
Along with wanting on the security of the vaccines, the researchers additionally collected blood to measure antibodies to the coronavirus. Some combos of various vaccine manufacturers led to a barely decrease stage of antibodies, and a barely increased stage in different circumstances. However the researchers didn’t suspect that any mixture of a flu and Covid vaccine would end in a decrease effectiveness than every given individually.
The researchers didn’t speculate about what immune responses folks may expertise in the event that they get a flu shot similtaneously a 3rd Covid-19 shot, which many individuals could also be doing as international locations authorize boosters.