Officials had initially linked 97 cases to a single conference held by Biogen in February in Boston, but a new study tracking viral genomes suggests the number may be as high as 20,000.
There have been no reports of health or environmental harm in other locations where genetically modified mosquitoes have been introduced over the last decade.
Genetic evidence points to individuals from South America having possibly floated on a raft to Polynesian islands about 500 years before Europeans navigated there.
Working with a virus that infects bacteria, the Stanford University biochemist and developmental biologist helped to develop a way to stitch DNA together, a discovery that gave rise to genetic engineering.
In a genome-wide association study, variants in both the ABO blood group locus and a cluster of genes on human chromosome 3 are more common among COVID-19 patients with respiratory failure than in the general population.
Eight amino acids are identical to part of the human epithelial sodium channel, leading researchers to suspect the virus might interfere with the channel’s function.
Wing development in females is environmentally controlled, but in males, an insertion on the sex chromosome appears to dictate whether the insects grow wings, according to a study.