MONDAY, JUNE 18, 2018

Influenza activity decreases in U.S.

While influenza activity remained elevated in the United States, activity decreased in most areas in the week ending February 2, according to a recent report by the Centers for Disease Control and Prevention.

Of 10,132 specimens that were tested and reported by collaborating laboratories, 23.3 percent, or 2,362 specimens, tested positive for influenza, a 2.2 percent decrease from the previous week. The proportion of outpatient visits for influenza-like illness was 3.6 percent, a decrease of 0.6 percent from the previous week.

Nineteen states and New York City experienced high ILI activity, down from 24 states and New York City the previous week. In the week ending February 2, 12 states experienced moderate activity, 13 states experienced low activity, six states had minimal activity and the District of Columbia had insufficient data. The previous week, 13 states and the District of Columbia experienced moderate activity, four states had low activity and nine states experienced minimal activity.

According to the most recent report, 38 states reported widespread influenza activity, nine states reported regional influenza activity, Puerto Rico, the District of Columbia and two states reported local influenza activity, one state reported sporadic influenza activity and Guam reported no activity. The geographic spread of influenza dropped from the previous week when 42 states reported widespread geographic influenza activity, seven states had regional activity, one state and the District of Columbia reported local activity, Guam had sporadic influenza activity and Puerto Rico did not report.

Influenza-associated pediatric deaths rose from eight deaths the previous week to 14 deaths.

The cumulative rate for the season of 29.8 laboratory-confirmed influenza-associated hospitalizations per 100,000 population remained consistent from week to week.