Finally, an answer for Johnson & Johnson vaccine recipients. Here’s what I chose.

There are others who might prefer J&J. The mRNA vaccines are associated with another rare condition, myocarditis (inflammation of the heart muscle), that’s most commonly seen in men under 30. It would be reasonable for someone in this group, in consultation with his doctor, to opt for a J&J booster. Similarly, if an individual had a severe allergic reaction to Pfizer or Moderna, a second dose of J&J could be more suitable.