Covid: Community spread to mutation, the risks if countries don't vaccinate

Some countries, such as Tanzania and Madagascar, have issued statements saying they do not have plans to vaccinate their populations against Covid-19

What are the risks if not everyone is vaccinated against COVID-19?

In countries where no significant proportion of the population is vaccinated, there is a huge risk of sustained community spread of COVID-19 over a prolonged period.

The longer the period of sustained community spread, the more likely that the virus will mutate. And this means it could be a breeding ground for the new coronavirus – SARS-CoV-2 – to mutate into more aggressive variants. The mutated variants from the unvaccinated population will be able to infect even those in the vaccinated population.

Vaccines may not work against mutated variants because of changes