Endemic COVID-19

COVID-19 has been predicted to become an endemic disease by many experts. The observed behavior of SARS-CoV-2, the virus that causes COVID-19, suggests it is unlikely it will die out, and the lack of a COVID-19 vaccine that provides long-lasting immunity against infection means it cannot immediately be eradicated;[1] thus, transition to an endemic phase appears probable. In an endemic phase, people continue to become infected and ill, but in relatively stable numbers.[1] Such a transition may take years or decades.[2] Precisely what would constitute an endemic phase is contested.[3]

Endemic is a frequently misunderstood and misused word outside the realm of epidemiology. Endemic does not mean mild, or that COVID-19 must become a less hazardous disease. The severity of endemic disease would be dependent on various factors, including the evolution of the virus, population immunity, and vaccine development and rollout.[2][4][5]

COVID-19 endemicity is distinct from the COVID-19 public health emergency of international concern, which was ended by the World Health Organization on 5 May 2023.[6] Some politicians and commentators have conflated what they termed endemic COVID-19 with the lifting of public health restrictions or a comforting return to pre-pandemic normality.

As of 2024, experts were in disagreement as to whether COVID-19 had yet become endemic.[7][8][9] The transition point of a pandemic into an endemic state is not well-defined, and whether this has occurred differs according to the definitions used.[10]

  1. ^ a b Antia R, Halloran ME (October 2021). "Transition to endemicity: Understanding COVID-19". Immunity (Review). 54 (10): 2172–2176. doi:10.1016/j.immuni.2021.09.019. PMC 8461290. PMID 34626549.
  2. ^ a b Cite error: The named reference markov was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference sw was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference koelle was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference cohen was invoked but never defined (see the help page).
  6. ^ "WHO downgrades COVID-19 pandemic, says it's no longer a global emergency". CBC. Retrieved 29 July 2023.
  7. ^ Stein R. "Is COVID endemic yet? Yep, says the CDC. Here's what that means". NPR. Retrieved 3 January 2025.
  8. ^ Ducharme J (11 March 2024). "Experts Can't Agree If We're Still in a Pandemic". TIME. Retrieved 31 May 2024.
  9. ^ Colarossi J (5 March 2024). "Is COVID-19 Still a Pandemic?". The Brink. Boston University. Archived from the original on 15 May 2024. Retrieved 9 June 2024.
  10. ^ Charters E, Heitman K (February 2021). "How epidemics end". Centaurus. 63 (1): 210–224. doi:10.1111/1600-0498.12370. ISSN 0008-8994. PMC 8014506.

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