The US has witnessed a puzzling trend in its bird flu outbreaks. Between 2003 and 2023, there were 882 reported cases worldwide, resulting in 461 deaths, a staggering mortality rate of around 50%. Most infections occurred before 2020. However, in 2024, the virus shifted to become more widespread.
Unlike previous years, when the outbreak was mainly linked to poultry, this year’s US cases saw an unexpected pattern: many were mild. Out of 70 human H5N1 cases reported last year, only one death occurred. Most infected individuals experienced minor symptoms such as pink eye or a cough. This unusual trend has left epidemiologists perplexed.
Health Secretary Robert F. Kennedy Jr. has suggested allowing the virus to “run through the flocks” rather than controlling outbreaks in poultry. This approach invites disaster and has raised concerns about the country’s preparedness. Although the US has been fortunate so far, its luck may not last.
Source: https://www.nytimes.com/2025/03/25/opinion/bird-flu-america-death.html