J&J is starting a 2-dose clinical study (https://clinicaltrials.gov/ct2/show/NCT04614948 https://clinicaltrials.gov/ct2/show/NCT04614948), perhaps to see if it

J&J is starting a 2-dose clinical study (https://clinicaltrials.gov/ct2/show/NCT04614948 https://clinicaltrials.gov/ct2/show/NCT04614948), perhaps to see if it could have comparable effectiveness as the 2-dose mRNA Moderna and Pfizer protocols. Unfortunately, the control arm for this study is a placabo instead of a single dose, which I would expect to be the standard of care.