COVID-19 Vaccines Prevented Millions of Deaths, Study Says

COVID-19 vaccines helped save lives.

They lowered the chances of people getting very sick or dying from the virus.

A study found the vaccines prevented millions of deaths globally.

The vaccines worked best for older people.

However, some people experienced side effects like fever, though serious problems were rare.

Countries like India gave vaccines to those most at risk first.

This strategy helped protect vulnerable populations.