The latest reports indicate that the Covid-19 booster shots are surpassing early vaccination doses by almost half. The news comes as thousands remain unvaccinated, whether by choice, fear or circumstance.

Whatever the situation, what is clear is that many questions still surround the vaccines and boosters. Dr. Abdul-Aziz Alhassan is Alternate Local Health Authority for Harris County Public Health. He’s here to help us answer a few questions.