A: It is an international day observed on 18 May to raise awareness about HIV vaccine research and honour those working to find a vaccine.
Q2: Why is it so hard to make an HIV vaccine?
A: HIV mutates very fast, has many strains, attacks the immune system, and can hide inside human cells for years.
Q3: When was the first World AIDS Vaccine Day observed?
A: The first official observance was on 18 May 1998.
Q4: How many people are living with HIV worldwide?
A: Nearly 40 million people are living with HIV globally, according to WHO estimates.
Q5: What are some new approaches in HIV vaccine research?
A: Scientists are testing broadly neutralising antibodies (bNAbs), mRNA technology, T cell-based immunity, and mosaic vaccine designs.
Month: Current Affairs - May 18, 2026
Category: World AIDS Vaccine Day 2026