Why do we need a vaccine?

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Why do we need a vaccine?
The vast majority of people are still vulnerable to coronavirus. It's only the current restrictions that are preventing more people from dying.

A vaccine would teach our bodies to fight the infection by stopping us from catching coronavirus, or at least making Covid less deadly.

Having a vaccine, alongside better treatments, is "the" exit strategy.
Vaccines typically require years of research and testing before reaching the clinic, but in 2020, scientists embarked on a race to produce safe and effective coronavirus vaccines in record time. Researchers are currently testing 64 vaccines in clinical trials on humans, and 19 have reached the final stages of testing. At least 85 preclinical vaccines are under active investigation in animals.
Below is a list of all vaccines that have reached trials in humans, along with a selection of promising vaccines being tested in animals. For an overview of treatments for Covid-19

The world is in the midst of a COVID-19 pandemic. As WHO and partners work together on the response -- tracking the pandemic, advising on critical interventions, distributing vital medical supplies to those in need--- they are racing to develop and deploy safe and effective vaccines.

Vaccines save millions of lives each year. Vaccines work by training and preparing the body’s natural defences --- the immune system--- to recognize and fight off the viruses and bacteria they target. If the body is exposed to those disease-causing germs later, the body is immediately ready to destroy them, preventing illness.