UPDATED January 21, 2026
Seasonal influenza activity remains elevated nationally, but influenza activity has decreased or remained stable for two consecutive weeks. Flu activity is expected to continue to increase or at least remain at a high level for several more weeks. CDC has classified this season’s flu outbreak as moderately severe. Compared with five previous seasons, doctors are seeing more patients in their offices and clinics with flu-like symptoms.
A Shifting Virus
Over the summer in the southern hemisphere, this year’s flu strain (H3N2) accumulated several mutations that affect our immune system’s ability to recognize and combat it. Mutations like these happen every year, but this year’s genetic drift was larger than average, making the virus less well-matched to the flu vaccine.
One of these mutations, variant Subclade K, is now the dominant strain in the US.
Vaccine Effectiveness
Despite a slightly mismatched vaccine, early data out of the UK indicates that the vaccine still offers meaningful protection. Current estimates show that 70-75% of vaccinated children and 30-40% of vaccinated adults are protected from hospitalization and other serious complications. Businesses can do a lot to encourage their employees to get the flu vaccine.
Removing Friction
Taking the hassle and inconvenience out of getting the vaccine is the most effective strategy for workplace vaccination. Businesses that can offer on-site vaccination clinics will likely have the highest vaccine coverage in their workforce. Where that’s not possible, offering paid time to employees who wish to get vaccinated is the next best thing.
Businesses can also ensure their health plans cover the flu vaccine at no cost and partner with national pharmacy chains for direct billing, removing cost concerns for employees.
Continuity and Savings
A growing body of literature shows that, year after year, businesses that invest in vaccinating their workforce save money and protect continuity. One study found that vaccinating healthy working adults saved an average of $13.66 per vaccinated person when factoring in reduced absenteeism, reduced medical cost, and productivity gains. Another study found that the absenteeism due to flu-like illness was notably reduced among vaccinated employees, with a rate of 30%, in contrast to 70% for those who were not vaccinated. Overall, company-led vaccination programs are cost-effective ways to protect employee health.
We Can Help
If you think your business could benefit from a fresh look at your continuity plans, or if you’d like more information on workplace polices to mitigate the spread of flu, please contact us for a free consultation.