The SARS-CoV-2 B.1.617 lineage was identified in October 2020 in India 1 , 2 , 3 , 4 – 5 .
Since then, it has become dominant in some regions of India and in the UK, and has spread to …

The SARS-CoV-2 Omicron variant was first identified in November 2021 in Botswana and
South Africa 1 , 2 – 3 . It has since spread to many countries and is expected to rapidly become …

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) B.1.1.7 and B.1.351 variants
were first identified in the United Kingdom and South Africa, respectively, and have since …

The severe acute respiratory syndrome coronavirus 2 Omicron BA.1 sublineage has been
supplanted in many countries by the BA.2 sublineage. BA.2 differs from BA.1 by about 21 …

Recombination occurs in many RNA viruses and can be of major evolutionary significance.
However, rates of recombination vary dramatically among RNA viruses, which can range …

Convergent evolution of SARS-CoV-2 Omicron BA.2, BA.4, and BA.5 lineages has led to the
emergence of several new subvariants, including BA.2.75.2, BA.4.6. and BQ.1.1. The …

Zika virus is a member of the Flavivirus genus that had not been associated with severe disease
in humans until the recent outbreaks, when it was linked to microcephaly in newborns in …

The progression of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
pandemic in Africa has so far been heterogeneous, and the full impact is not yet well understood…

The 2013–2016 West African epidemic caused by the Ebola virus was of unprecedented
magnitude, duration and impact. Here we reconstruct the dispersal, proliferation and decline of …

Investment in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) sequencing
in Africa over the past year has led to a major increase in the number of sequences that have …