Welcome to the September newsletter. This newsletter aims to provide information and analysis of timely topics from recent articles published in the medical literature. I hope you find this information useful and helpful in your health journey. If you have comments or questions, please let us know. I hope you enjoy these articles!
I have been getting a lot of questions in regard to the new bivalent covid booster shots. Who should get them? When should people get them? A recent study in The Lancet sheds some light on these questions. They found that hybrid immunity from prior omicron infection and at least two doses of vaccine provided the highest protection from omicron infection and this protection was not improved with additional doses of vaccine.
The current bivalent vaccine is the BA.1 variant plus the original vaccine. The study suggests that getting the current vaccine - if you have had previous vaccines and an omicron infection is not likely to be beneficial for most people (esp. younger and healthy). Omicron has been the dominant variant since mid-December so if you had a covid infection since December, it was omicron. I generally recommend at least 6 months (longer than the CDC's 3-month window) between booster vaccines and either a previous vaccine dose or infection for those who would like to get the new vaccine. This advice may change if a vaccine for current variants is released but right now I would not recommend most people rush out to get the new booster.