I had my 2nd booster (Moderna) on June 12. The current recommendation for the just released, updated Covid booster is 6 months after last booster for best protection response. The minimum time is 2 months. I am traveling Sept 12 for 30 days in Thailand, Australia and New Zealand. Should I consider getting the new Covid booster to increase my protection while traveling even though it has been less than 6 months?
I would recommend a decision to complete a booster dose (bivalent vaccine) prior to extensive international travel. It is now >2 months from your last dose of vaccine, so you are eligible.