Delta variant
Pandemic's second wave
The Delta variant is a mutation of SARS-CoV-2, the virus causing COVID-19, first identified in India in late 2020.
It became the dominant strain worldwide by mid-2021 due to its significantly higher transmissibility than earlier variants.
The Delta variant spread through the community before vaccines were widely available.
Now largely superseded by Omicron and its subvariants.
- COVID-19WHO-named 2019 coronavirus
- SARS-CoV-2Pandemic-causing coronavirus species
- coronavirusSpike-ringed viral family
- strainExcessive stretching force
- mutationPermanent DNA alteration
contagiousness · pandemic · flatten the curve · pathogenicity · transmission · infection · breakthrough infection · ICU beds · booster shots · herd immunity · outbreak · vaccine efficacy · social distancing · spike protein · super spreader · viral genome · antibody response · quarantine protocols
- infectionsviral infection, bacterial infection, fungal infection, parasitic infection, bacteremia
- COVID-19COVID-19, spike protein, mRNA vaccines, omicron, long COVID
- Respiratory Virusesinfluenza, RSV, coronavirus, rhinovirus, parainfluenza
- epidemicsepidemic, pandemic, outbreak, disease, Black Death
- viral diseasesinfluenza, measles, mumps, rubella, smallpox
delta, deltas, variant, variants, variation, variations, variable, variables, variability