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.

Bovine H5N1 influenza shows potential for human adaptation through key mutations

Recent study reveals H5N1 mutations enhancing human receptor binding, highlighting pandemic risks and the need for vigilant surveillance of influenza strains.

9 Dec 2024

Polypurine hairpins found to effectively halt SARS-CoV-2 replication

A study led by the University of Barcelona and the Spanish National Research Council's Institute for Advanced Chemistry of Catalonia (IQAC - CSIC) presents a new therapeutic tool capable of inhibiting the proliferation of the SARS-CoV-2 virus that causes COVID-19.

3 Dec 2024

Seasonal influenza adapted and evolved during the COVID-19 pandemic

Although travel restrictions and social measures during the COVID-19 pandemic led to a dramatic global drop in seasonal influenza cases, certain influenza lineages in specific regions kept the virus circulating and evolving, according to a new study.

7 Nov 2024

US study uncovers antiviral resistance in swine-origin influenza, urging enhanced pandemic surveillance

Researchers in the US analyzed swine-origin influenza viruses, identifying key mutations that could reduce antiviral drug effectiveness and threaten pandemic preparedness.

9 Oct 2024

Pasteurization effectively reduces H5N1 virus in milk but further testing is essential

Research explores the resilience of the H5N1 influenza virus in milk under pasteurization conditions, showing effective viral inactivation at standard temperatures but highlighting the need for further real-world testing.

6 Oct 2024

Study reveals high effectiveness of flu vaccines in children but highlights challenges with certain subtypes

Study found that influenza vaccination is highly effective in preventing infection and hospitalization in children, though efficacy against certain subtypes like H3N2 remains limited due to small sample sizes.

6 Oct 2024

Study confirms flu vaccine effectiveness against A H1N1 in young children

A study published on Eurosurveillance has demonstrated that Spain's influenza vaccination campaign for children aged 6-59 months during the 2023/24 season was effective in preventing acute respiratory infections (ARI) and hospitalization, as vaccination was recommended for this age group at the national level for the first time.

4 Oct 2024

WHO announces recommended viral composition for 2025 influenza vaccines

The World Health Organization (WHO) today announced the recommendations for the viral composition of influenza vaccines for the 2025 influenza season in the southern hemisphere.

27 Sep 2024

Octavalent intranasal flu vaccine proves effective in neutralizing both existing and emerging strains

A new octavalent intranasal vaccine shows promising results in providing broad immunity against both seasonal and pre-pandemic influenza strains by eliciting strong mucosal and systemic immune responses in ferrets.

25 Aug 2024

Universal flu vaccine candidate provides protection against severe infection in animal models

Annual flu vaccines protect against severe infection, but they vary in efficacy and may not match the most virulent strains of the season.

23 Aug 2024

Study reveals distinct genetic risk factors for influenza and COVID-19

A recent study in Nature Genetics reports that genetic risk factors for influenza and COVID-19 are distinct, highlighting their unique genetic architectures.

6 Aug 2024

COVID-19's impact on maternal mortality demands rethink of public health strategies

During the peak of the SARS-CoV-2 pandemic, there was an increase in maternal mortality in Chile. This is confirmed by a natural population experiment based on data from the Department of Health Statistics and Information (DEIS) of the Chilean Ministry of Health. The research was published in PLOS Global Public Health.

23 Jul 2024

Bovine H5N1 flu virus in cow milk poses significant health risks, study shows

Study characterizes the pathogenicity and transmission dynamics of the H5N1 influenza virus in bovine milk, highlighting significant public health risks and potential mammalian transmission.

10 Jul 2024

Study warns of H5N1 avian flu risk from unpasteurized milk in dairy farms

Researchers found that the H5N1 avian influenza virus can persist in unpasteurized milk on milking equipment, posing an infection risk to dairy workers. They recommend protective gear and sanitization to prevent virus transmission.

4 Jul 2024

Bird flu virus detected in Alaskan polar bear

Researchers reported a natural infection of a highly pathogenic avian influenza A(H5N1) virus in a free-ranging juvenile polar bear in Alaska, highlighting the importance of wildlife health surveillance in detecting emerging pathogens.

2 Jul 2024

Study shows how milking equipment spreads bird flu risk

Bird flu, or H5N1 virus, in unpasteurized milk is stable on metal and rubber components of commercial milking equipment for at least one hour, increasing its potential to infect people and other animals, report researchers from the University of Pittsburgh School of Medicine and Emory University in Emerging Infectious Diseases.

28 Jun 2024

H1N1 News and Research

Bovine H5N1 influenza shows potential for human adaptation through key mutations

Polypurine hairpins found to effectively halt SARS-CoV-2 replication

Seasonal influenza adapted and evolved during the COVID-19 pandemic

US study uncovers antiviral resistance in swine-origin influenza, urging enhanced pandemic surveillance

Pasteurization effectively reduces H5N1 virus in milk but further testing is essential

Study reveals high effectiveness of flu vaccines in children but highlights challenges with certain subtypes

Study confirms flu vaccine effectiveness against A H1N1 in young children

WHO announces recommended viral composition for 2025 influenza vaccines

Octavalent intranasal flu vaccine proves effective in neutralizing both existing and emerging strains

Universal flu vaccine candidate provides protection against severe infection in animal models

Study reveals distinct genetic risk factors for influenza and COVID-19

COVID-19's impact on maternal mortality demands rethink of public health strategies

Bovine H5N1 flu virus in cow milk poses significant health risks, study shows

Study warns of H5N1 avian flu risk from unpasteurized milk in dairy farms

Bird flu virus detected in Alaskan polar bear

Study shows how milking equipment spreads bird flu risk

New study warns of potential pandemic risk from α-H1N2 swine flu virus

Low-cost CRISPR-based paper strip test offers rapid influenza diagnosis

The chicken and egg problem of fighting another flu pandemic

Farmworkers face high-risk exposures to bird flu, but testing isn’t reaching them

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