December 5, 2023
Picture Supply: Jagran Josh

Within the ongoing battle towards influenza throughout this flu season, the rising H3N2 subtype has risen to dominance, surpassing each swine flu (HINI) and COVID-19. Alongside H3N2, the Influenza B sublineage Victoria can be contributing to a smaller portion of instances nationwide. The prevalence of H3N2 is clear amongst hospitalized sufferers in Maharashtra, the place the variety of flu admissions is steadily growing. Whereas reported deaths stay comparatively low, healthcare professionals are intently monitoring the scenario.

The Prevalence of H3N2 and Inhabitants Immunity:

The positivity price for flu in Maharashtra has seen a major improve in July, rising from 6 p.c in April and Could to 19 p.c. Dr. Varsha Potdar from the Nationwide Institute of Virology attributes this increased prevalence of H3N2 to the inhabitants’s immunity profile. With a major proportion of people beforehand uncovered to COVID-19 and vaccinated towards it, the prevalence of H3N2 has seen an upswing. In the meantime, the circulation of HINI was noticed final 12 months.

Modifications in Influenza Circulation: 

The onset of the COVID-19 pandemic in 2020 has led to shifts within the circulation of influenza viruses worldwide. Notably, the influenza B Yamagata lineage has not been detected globally since April 2020, whereas the influenza B sublineage Victoria is more and more prevalent. Mumbai’s KEM Hospital has noticed a excessive variety of constructive instances for H3N2 and fewer instances of COVID-19 and H1N1. In gentle of those findings, a proposed research goals to discover the connection between completely different virus sorts and the medical signs they manifest.

Significance of H3N2 and Its Historic Background:

H3N2 has historic significance, being chargeable for the 1968 pandemic that claimed 1,000,000 lives worldwide earlier than turning into a seasonal flu. In contrast to the comparatively steady influenza B viruses, H3N2 tends to bear fast adjustments. Happily, it has not prompted important devastation this flu season. Most sufferers get better effectively, particularly when administered oseltamivir early. Healthcare professionals emphasize the significance of vaccination, given the cyclic nature of viruses and ranging immunity ranges within the inhabitants, permitting completely different viruses to rise to dominance.

Public Well being Measures and the Manner Ahead:

As H3N2 instances proceed to rise, healthcare professionals stress the significance of steady surveillance, early therapy, and widespread vaccination to handle the scenario successfully. Vaccination stays the best technique to guard people and communities from the flu. Early administration of oseltamivir for these with flu-like signs may help cut back the severity and period of the sickness. Public well being authorities are intently monitoring flu exercise and developments to reply promptly to any potential outbreaks.

Schooling and Consciousness:

Growing public training and consciousness campaigns are essential in encouraging vaccination and selling preventive measures. Easy practices, resembling frequent handwashing, protecting the mouth and nostril whereas sneezing or coughing, and staying house when feeling unwell, may help forestall the unfold of influenza viruses. Healthcare suppliers play an important function in educating sufferers in regards to the significance of vaccinations and dispelling myths surrounding them.

World Collaboration in Flu Surveillance:

Given the transmissible nature of influenza viruses, international collaboration in flu surveillance is crucial. Influenza viruses can simply cross borders, making worldwide cooperation essential in monitoring flu exercise, figuring out new strains, and guaranteeing early response to potential outbreaks. Sharing knowledge and analysis findings amongst international locations can contribute to a extra complete understanding of flu viruses’ habits and evolution.


Because the rising H3N2 dominates this flu season, healthcare professionals and public well being authorities should stay vigilant of their efforts to fight the unfold of the virus. Whereas instances are on the rise, the scenario might be managed successfully via steady surveillance, early therapy, and widespread vaccination. Public training and consciousness campaigns will empower people to take preventive measures, defending themselves and their communities from the flu. With international collaboration in flu surveillance, the world can reply swiftly to any potential outbreaks and work collectively to safeguard public well being. Within the face of this ongoing battle with influenza viruses, cooperation, preparedness, and a concentrate on selling total well-being are important to navigate via this flu season and past.