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2024-05-19T21:27:45Z

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[[file:SARS-CoV-2_Delta_variant.svg|thumb|right]] {{clear}}== SARS-CoV-2 Delta variant ==

The '''SARS-CoV-2 Delta variant''', also known as '''lineage B.1.617.2''', is a variant of [[SARS-CoV-2]], the virus that causes [[COVID-19]]. It was first identified in [[India]] in late 2020 and has since spread to many countries around the world. The Delta variant is notable for its increased transmissibility and potential resistance to neutralizing antibodies.

=== Characteristics ===
The Delta variant has several mutations in the [[spike protein]] of the virus, which is the primary target for [[COVID-19 vaccines]]. These mutations include L452R, T478K, and P681R, among others. These changes are believed to enhance the virus's ability to bind to the [[ACE2 receptor]] on human cells, facilitating easier entry and infection.

=== Transmissibility ===
Studies have shown that the Delta variant is more transmissible than the original [[Wuhan strain]] of SARS-CoV-2 and other variants such as the [[Alpha variant]]. This increased transmissibility has led to rapid surges in COVID-19 cases in areas where the Delta variant becomes dominant.

=== Vaccine Efficacy ===
While [[COVID-19 vaccines]] remain effective at preventing severe disease and death, there is evidence that the Delta variant can partially evade the immune response generated by vaccination. This has led to concerns about breakthrough infections, although vaccinated individuals generally experience milder symptoms compared to those who are unvaccinated.

=== Impact ===
The spread of the Delta variant has had significant public health implications, leading to renewed restrictions and lockdowns in various regions. It has also prompted efforts to accelerate vaccination campaigns and the development of booster doses to enhance immunity against this and other variants.

=== Prevention and Control ===
Preventive measures to control the spread of the Delta variant include continued vaccination efforts, wearing masks, maintaining physical distancing, and practicing good hand hygiene. Public health authorities also emphasize the importance of testing, contact tracing, and isolation of infected individuals.

=== See Also ===
* [[COVID-19 pandemic]]
* [[Variants of SARS-CoV-2]]
* [[COVID-19 vaccine]]
* [[Public health]]

[[Category:COVID-19]]
[[Category:Virus variants]]
[[Category:Virology]]

{{COVID-19 pandemic}}
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SARS-CoV-2 Delta variant - Revision history

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