H1N1 News and Research

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Novel influenza A (H1N1) is a new flu virus of swine origin that was first detected in Mexico and the United States in March and April, 2009. The first novel H1N1 patient in the United States was confirmed by laboratory testing at CDC on April 15, 2009. The second patient was confirmed on April 17, 2009. It was quickly determined that the virus was spreading from person-to-person. On April 22, CDC activated its Emergency Operations Center to better coordinate the public health response. On April 26, 2009, the United States Government declared a public health emergency.

It’s thought that novel influenza A (H1N1) flu spreads in the same way that regular seasonal influenza viruses spread; mainly through the coughs and sneezes of people who are sick with the virus.

Can an allergy spray help prevent COVID-19?

Researchers determine the efficacy and safety of azelastine nasal spray for preventing SARS-CoV-2 infection in healthy adults.

8 Sep 2025

AI model predicts flu vaccine strains more accurately than WHO

AI-based models like VaxSeer outperform traditional methods in flu vaccine strain selection, enhancing effectiveness and addressing global influenza challenges.

2 Sep 2025

Rising human adaptive potential seen in 2.3.4.4b clade of H5N1

In recent years, there has been growing concern over the H5N1 influenza virus. It was first identified in birds three decades ago and has now gradually found its way to humans.

12 Aug 2025

Understanding the biomarkers and mechanisms associated with anti-NMDAR encephalitis

Encephalitis is a potentially life-threatening condition that involves inflammation of the brain. While some cases of encephalitis are caused by a bacterial or viral infection, other cases of 'autoimmune' encephalitis result when the body's own immune system attacks the brain.

8 Aug 2025

Study finds past H1N1 exposure shields animals from deadly H5N1

Preexisting immunity to the 2009 H1N1 influenza virus provided near-complete protection against severe H5N1 disease and transmission in ferrets, even after high-dose exposure. In contrast, H3N2 immunity alone offered only partial, inconsistent protection.

28 Jul 2025

Infectious disease outbreaks erode trust in political institutions

The COVID-19 pandemic has drawn the attention to the far-reaching social implications of emerging infectious diseases, bringing to mind similarly impactful events like the Black Plague in early modern Europe or the Spanish Flu after World War I.

15 Jul 2025

Therapeutic potential of houttuynia cordata polysaccharide in H1N1 and MRSA-induced acute pneumonia

This new article publication from Acta Pharmaceutica Sinica B, discusses how an anti-complement homogeneous polysaccharide from Houttuynia cordata ameliorates acute pneumonia with H1N1 and MRSA coinfection through rectifying Treg/Th17 imbalance in the gut–lung axis and NLRP3 inflammasome activation.

12 Jul 2025

ADC189 shows promise as a single-dose treatment for influenza

Influenza continues to pose a significant global health burden, with seasonal outbreaks causing substantial morbidity and mortality.

24 Jun 2025

What makes H5N1 a pandemic risk and how can we stop it?

A new PEARLS article in PLoS Pathogens reviews the rapid evolution and pandemic potential of emerging influenza A viruses, with a focus on H5N1. It highlights scientific advances and future strategies to outpace the virus, from next-generation vaccines to AI-driven antiviral discovery.

19 May 2025

Monoclonal antibody protects mice from lethal influenza A doses

Scientists have engineered a monoclonal antibody that can protect mice from a lethal dose of influenza A, a new study shows.

8 May 2025

HHS and NIH announce the development of next-generation, universal vaccine platform

Colorized transmission electron micrograph of influenza A/H1N1 virus particles. The U.S. Department of Health and Human Services (HHS) and the National Institutes for Health (NIH) today announced the development of the next-generation, universal vaccine platform, Generation Gold Standard, using a beta-propiolactone (BPL)-inactivated, whole-virus platform.

1 May 2025

New biosensor offers fast detection of H5N1 in farm air

As highly pathogenic H5N1 avian influenza continues to spread in the U.S., posing serious threats to dairy and poultry farms, both farmers and public health experts need better ways to monitor for infections, in real time, to mitigate and respond to outbreaks.

24 Apr 2025

New approach to combat influenza and herpes with bean-based gum

In today's interconnected world, infectious diseases pose an escalating threat, as demonstrated by the coronavirus pandemic and outbreaks of H1N1, SARS, Ebola, Zika, and H5N1 (bird flu) viruses-all of which have had significant global health and economic impacts.

4 Apr 2025

Older adults may have stronger immunity to bird flu, Penn study finds

Prior exposures to specific types of seasonal influenza viruses promote cross-reactive immunity against the H5N1 avian influenza virus, according to new research from the Perelman School of Medicine at the University of Pennsylvania.

13 Mar 2025

Updates on influenza vaccine strain recommended by WHO (2025-2026 northern hemisphere)

To maintain vaccine efficacy, WHO regularly updates influenza vaccine strains based on global epidemiological, virological, and serological analyses.

From Sino Biological Inc. 12 Mar 2025

The Rise of Ionized Hydrogen Peroxide (iHP) in Modern Disinfection

Discover the benefits of ionized hydrogen peroxide for disinfection. Jim Reynolds shares expert insights on its applications and impact on industry standards.

From SteraMist Disinfection and Decontamination Technology 13 Jan 2025

New molecule shows promise in protecting mice from influenza

Researchers at the University of Gothenburg, Sweden, in collaboration with colleagues in China, have discovered an antibody-like molecule that can protect mice from various influenza viruses.

9 Jan 2025

Human protein MxA restricts H5N1, but virus mutations raise alarms

Human MxA protein suppresses mammalian H5N1 virus replication, but emerging mutations may enable partial evasion, raising concerns for human transmission.

5 Jan 2025

A scaffolded vaccine approach for broader influenza protection

Most people who get the seasonal influenza vaccine – which contains strains of viruses from distinct virus subtypes – mount a strong immune response to one strain, leaving them vulnerable to infection by the others, and researchers have long wondered what impacts such variable responses more – host genetics or prior exposure to virus strains.

19 Dec 2024

Raw milk may carry hidden risks of flu transmission

Raw milk, hailed by some as a natural and nutritious alternative to pasteurized dairy, may come with hidden dangers, according to a new Stanford University study.

14 Dec 2024