Influenza Season Kick-Starts with Prominent Strains Dominating Samples

The 2024 influenza season has officially commenced, with the National Institute for Communicable Diseases (NICD) reporting an uptick in cases. In week 17, the NICD’s surveillance data revealed a significant rise in influenza detections at public hospitals, surpassing the seasonal threshold for two consecutive weeks.

Within the pneumonia surveillance program as of May 9, 2024, the predominant influenza strains identified in samples include A(H1N1)pdm09, B/Victoria, and A(H3N2). Among the 52 positive influenza samples, A(H1N1)pdm09 accounts for 55.8%, followed by B/Victoria at 13.5% and A(H3N2) at 3.8%. Additionally, some samples are pending subtyping results, highlighting the ongoing monitoring and analysis of influenza strains.

Influenza A(H3N2), A(H1N1)pdm09, and influenza B are commonly circulating influenza viruses in humans, causing varying degrees of illness. While most cases result in mild symptoms resolving within a week, severe outcomes can occur, particularly in high-risk groups such as pregnant women, individuals with chronic conditions, and the elderly.

The NICD emphasizes the importance of influenza vaccination to prevent infection and severe complications. While it’s advisable to receive the vaccine before the onset of the season, late vaccination still provides protection. Individuals in high-risk categories are encouraged to seek vaccination from healthcare providers or designated facilities.

Regular vaccination is crucial due to the evolving nature of the influenza virus. By staying informed and proactive about vaccination, individuals can mitigate the risk of influenza-related hospitalizations and contribute to community health.