Coronavirus: What You Need to Know About the New Delta Variant

As long as the coronavirus is spreading through the population, new variants will occur and mutations will continue to happen.

However, we can slow the emergence of new variants by:

  • Taking protective measures (wearing masks, social distancing, hand hygiene)
  • Getting COVID-19 vaccine  

About the Delta variant:

  • It is more contagious than the other strains
  • It might cause more severe symptoms than the other variants in unvaccinated persons
  • Wearing a mask in public indoor places is recommended, even if people are fully vaccinated
  • FDA-authorized COVID-19 vaccines are highly effective, but breakthrough infections sometimes occur
  • Fully vaccinated people with Delta variant breakthrough infections may still spread the virus to others. However, vaccinated people appear to be infectious for a shorter period

Symptoms

The Delta variant symptoms are the same as the original version of COVID-19:

  • Cough
  • Fever or headache
  • Congestion or runny nose
  • Tiredness
  • Loss of taste or smell

However, recent research found that the Delta variant grows more rapidly with greater levels in the respiratory tract. 

References:

https://www.cdc.gov/coronavirus/2019-ncov/variants/delta-variant.html

https://www.yalemedicine.org/news/5-things-to-know-delta-variant-covid

Bernal JL, Andrews N, Gower C, et al. Effectiveness of Covid-19 Vaccines against the B.1.617.2 (Delta) Variant. N Engl J Med. 2021 Jul 21; doi: 10.1056

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