The four UnityPoint hospitals in the Des Moines metro area report a tenfold increase in the number of patients testing positive for the flu in recent weeks, with more than 500 cases confirmed since late December. Flu cases across the region are multiplying rapidly as transmission rates are high, according to Megan Meller, an infection preventionist at Emplify Health by Gundersen.
“This year, the virus that’s circulating, H3N2, it’s not a good match for the vaccine, and that’s because during its season it made copy mutations, which is very common for these viruses,” Meller says, “but these mutations allow the virus to evade our immunity just enough to enable it to spread a little bit quicker among people than we would otherwise expect.”
She says this season’s flu strain is responding much like in past years, though it is spreading at a faster rate…