Booster doses available for qualifying residents who received previously the Pfizer vaccine series Harris County Public Health (HCPH) is now administering the Pfizer-BioNTech vaccine booster to qualifying residents who received both doses of the Pfizer vaccine at least six months ago. All COVID-19 vaccines provide strong protection for most people. A booster vaccine in an additional dose given after the protection provided by the original series has begun to decrease over time. The Pfizer booster helps […]
