varieties

Coronavirus that causes Covid-19 has already mutated a lot since it appeared in late 2019 in China. In addition to the original source, known as "wild" that will spread throughout the world by 2020, more infectious variants, sometimes more dangerous or even that may partially escape vaccination, have emerged. The World Health Organization (WHO) and governments around the world are therefore closely…

In Senegal, the Institut Pasteur in Dakar notes a strong circulation of variants of Covid-19. Four have been identified among departing travelers in April and May. The alpha variant (known as "British") had already been discovered in the territory. From now on, Delta (known as "Indian"), Beta (known as "South African") and Nigerian variants are also circulating. The health service is asking for an…