US influenza activity continued its slow fade during the third week in March, as 24 states still reported widespread cases, compared with 30 states the week before, (Snip) Nineteen states reported regional activity. Three more children died of flu-related causes, one each in Kentucky, New York, and West Virginia, bringing the seasonal total to 35, the CDC said. Extending a recent trend, more than half (52.5%) of tested flu viruses were type B, the only type for which the strain in this year’s vaccine is not well matched to the circulating strains. Nationally, 2.6% of medical visits in the CDC surveillance network were attributed to flu-like illness, staying above the national baseline of 2.4%.