Just when we thought we'd found a solution, coronavirus variants are putting a new spin on the world's pandemic problems. Fears of reinfection, vaccine inefficiency and quicker transmissibility were all addressed by the World Health Organisation; however no one yet has the answers.
As new variants emerge around the world, evidence is mounting that being infected with COVID-19 may not protect against reinfection.
In Brazil, researchers are exploring whether reinfections help explain a recent surge in the city of Manaus, where three-quarters of residents were thought to have been previously infected.
South Africa put their inoculation program on temporary hold after studies suggested the vaccines would be minimally effective against the South African B.1.351 variant.
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