All articles tagged with #h1n1
Influenza cases are rising earlier than usual in 2026, marking the earliest start in five years. The surge is primarily driven by the H1N1 strain, which is currently dominant in both the US and Canada. While H1N1 is generally milder than H3N2, health officials urge immediate vaccination to prevent severe complications and hospitalizations, especially for high-risk groups.
Flu season is starting earlier than usual in the US, with an early surge of H1N1 virus concentrated on the West Coast. Experts note this breaks the typical pattern where flu spreads from the South to the West later in the season. While it is too early to predict the full season's severity, the H1N1 strain is considered potentially more transmissible. Doctors urge immediate vaccination, as the vaccine takes two weeks to become effective and offers protection even if strains are mismatched.
Influenza activity is starting weeks earlier than usual in the Northern Hemisphere, with the Pacific Northwest leading the surge. H1N1 now accounts for 96% of subtyped US cases, driven by a concerning mutation (G155E) that may evade existing immunity. While national activity remains low, local emergency room visits in Washington have jumped sevenfold compared to last year, prompting experts to advise immediate vaccination rather than waiting for the traditional October window.
Flu activity is surging earlier than usual in parts of the western United States, prompting health experts to urge immediate vaccination. While national levels remain low, local spikes in Washington and Seattle have caught hospitals off guard. New vaccine options, including an mRNA shot for adults over 50, are available, but federal guidance has been disrupted by changes to the CDC’s advisory committee, leading independent medical groups to issue their own recommendations.
Doctors in Central Texas report an increase in flu A (H1N1) cases, with symptoms including high fever, sore throat, runny nose, and gastrointestinal issues. Vaccination is recommended, especially for vulnerable groups, along with hand hygiene and mask-wearing to prevent spread.
A new study suggests that prior immunity from H1N1 influenza may provide some protection against the severe effects of H5N1 bird flu in humans, based on experiments in ferrets. While this offers hope that a potential H5N1 pandemic might be less deadly, experts caution that the virus's ability to evolve and other factors mean the threat remains significant. Further research is needed to fully understand the mechanisms of cross-protection and the ongoing risk of H5N1.
A child in Montana has become the third person in the US this year to be infected with swine flu (H1N1) after close contact with infected pigs at an agricultural fair. Swine flu rarely spreads from animals to humans, but the 2009 outbreak was caused by a mutated virus capable of infecting humans. Symptoms of swine flu are similar to other influenza viruses, but cases are usually mild and resolve on their own. The recent case raises concerns about possible human-to-human transmission. The CDC recommends precautions at agricultural fairs to avoid potential infection. Swine flu infections from pigs to humans are relatively rare, with those in regular contact with pigs being at higher risk.
The Centers for Disease Control and Prevention (CDC) will investigate a fatal case of H1N1 swine flu in Brazil after a 42-year-old woman died from the virus. The woman had no direct contact with pigs, and there is no evidence of person-to-person transmission. The CDC plans to study samples collected from the case to compare the virus with previous variants that have infected animals and humans. The Biden administration has been planning to increase efforts to spot cases of potentially deadly new flu variants spreading to humans.
Maharashtra has reported 352 cases of Influenza A, including H3N2, Covid-19, and H1N1. Real-time surveillance by the Integrated Disease Surveillance Programme shows that 955 cases of H1N1 have been reported by states till February 28, with a majority of cases reported from Tamil Nadu, Maharashtra, Gujarat, Kerala, and Punjab.