First Human Case of Swine Flu Strain Identified in the UK

In a significant development, the UK Health Security Agency (UKHSA) has identified a variant of the flu strain H1N2, known as influenza A(H1N2)v, in humans for the first time within the UK. The discovery was made through routine national flu surveillance after an individual sought medical attention for respiratory symptoms, as disclosed by the UKHSA on Monday.

Mild Presentation and Swift Recovery

The affected person reportedly experienced a mild illness and has since fully recovered. Nevertheless, the UKHSA emphasizes that the investigation into the source of infection is ongoing, with the transmission pathway yet to be determined.

Unprecedented Detection in the UK

Meera Chand, Incident Director at UKHSA, highlighted the uniqueness of the situation, stating, “This is the first time we have detected this virus in humans in the UK, though it is very similar to viruses that have been detected in pigs.” Urgent measures are being taken to trace close contacts and mitigate potential spread.

The Chief Veterinary Officer, Christine Middlemiss, issued a directive for pig keepers, urging them to promptly report any suspicion of swine flu in their herds to local veterinarians.

Global Context and Genetic Distinctions

Only 50 cases of influenza A(H1N2)v have been reported since 2005, with none genetically linked to the recently identified strain.

Preliminary data indicates that the UK-detected variant belongs to a distinct clade (1b.1.1), differing from recent human cases worldwide but resembling strains prevalent among pigs in the UK.

Divergence from Previous Pandemic Strain

It is crucial to note that the current influenza A(H1N2)v is distinct from the 2009 pandemic strain, influenza A H1N1(pdm09), commonly known as “swine flu.”

The latter is circulating seasonally among humans and is genetically separate from the strains observed in pig populations. Vigilance and continued research are essential to comprehend this emerging variant’s implications and potential risks.

Read the original article on IFL Science.

Read more: Study Uncovers that a Mutated Swine Flu Virus Could Pose a Threat Once More to Our Health.