A new and powerful flu strain has emerged, causing widespread illness and concern. Is this year's vaccine up to the task?
The influenza A(H3N2) subclade K has been identified as the primary driver of infections across the country, including the tragic first pediatric flu death in New Jersey. With an estimated 180,000 hospitalizations and 7,400 deaths so far, this flu season is shaping up to be a challenging one.
But here's where it gets controversial: the vaccine, prepared months before the emergence of subclade K, may not fully cover this particular strain. Dr. Adeel Butt, an infectious disease expert, explains that the vaccine's effectiveness can be impacted by genetic differences between circulating viruses and targeted strains.
So, why does this year's flu seem so fierce? Flu viruses are notorious for their constant evolution and mutation. Researchers work tirelessly to predict and target the most common strains, but occasionally, a new strain like subclade K emerges, catching us off guard.
And this is the part most people miss: even with some differences between the vaccine and circulating strains, preliminary data suggests the vaccine is still highly effective. The UK Health Security Agency reports a 70-75% effectiveness in preventing hospital attendance for children and a 30-40% effectiveness in adults.
Dr. Daniel Ruderfer, a pediatric infectious disease specialist, emphasizes the importance of vaccination, stating that those who get the flu vaccine generally have better outcomes. However, he expresses concern over the declining national flu vaccination coverage for children, which is currently at its lowest level since 2011.
Butt adds that vaccination remains the best protection against influenza and severe illness, dispelling the misconception that the flu shot can give you the flu. Flu vaccines use various components like viral proteins or inactivated viruses to teach the immune system, but they do not contain active, live flu virus.
So, can you still get sick even after vaccination? Yes, but public health experts emphasize that vaccines significantly reduce the risk of severe illness and death. On average, flu vaccines have a 40-60% efficacy in reducing severe illness, according to the CDC.
The good news is that it's not too late to get a flu shot. Flu season typically runs from October to May, and currently, nearly 15 states are experiencing high flu activity. Vaccines are available for people aged 6 months and older, and you can find them at various locations, including doctor's offices, pharmacies, and community health centers.
So, take action and protect yourself and your community. Visit the CDC website for more information and to find a vaccine location near you.
