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π¦ San Joaquin County reported a new human West Nile case in the latest weekly count, and our forecast has mosquito activity around Stockton climbing next week and holding into early November.
The mosquitoes that carry it stay active until nights turn consistently cold.
π€§ Bird flu risk is elevated across central Iowa, where the virus turned up in wild birds this month in Polk County, around Des Moines, and in Butler County farther north.
Ducks and geese migrating through Iowa can carry it without showing any signs of illness.
π¦ Citrus County, north of Tampa, has confirmed two locally acquired dengue cases, on top of the 368 Florida had counted this year through October 10.
Warm fall days keep the mosquito that spreads dengue biting around homes, often in broad daylight.
π€§ Flu has arrived early in northern Louisiana β about 1 in 40 ER visits around Shreveport were for flu in the week ending October 10, more than three times the national share.
Monroe, to the east, is climbing quickly, and flu usually doesn't peak for weeks yet.
π€§ Measles is spreading in the community in 15 Pennsylvania counties, from Centre and Mifflin around State College west to Clearfield and Jefferson.
Two doses of the MMR vaccine prevent about 97% of measles infections.
π¦ Orange County added 11 human West Nile cases in the latest weekly count, and our forecast has mosquito activity around Anaheim holding steady into early November.
In coastal Southern California the season usually fades only in November, once evenings finally cool.
π€§ Flu is picking up earlier than usual in Washington β about 1.5% of emergency room visits statewide were for flu in the week ending October 10, four times the early-September share.
Levels are still low, and the season usually builds for weeks before its winter peak.
π€§ Bird flu risk is elevated around Jackson County in southwest Minnesota, where a backyard flock was confirmed October 7 β the same week turkey farms in Stearns and Kandiyohi counties were hit.
Outbreaks tend to climb as migrating ducks and geese stop over on the state's lakes.
π¦ Our forecast keeps mosquito activity around Fort Worth near today's level into early November β Tarrant County has had 13 human West Nile cases this year.
In North Texas the first freeze, which ends the season, usually doesn't arrive until late November.
π€§ RSV is rising from a low base in Brooklyn β weekly lab-confirmed cases nearly tripled in two weeks, reaching 598 in the week ending October 10.
It's still early in the season, which usually keeps building through late fall.
π€§ Flu is rising early in California β about 1 in 10 flu tests came back positive in the week ending October 10, more than triple the share in early September.
The Bay Area is furthest along, and flu season usually keeps building through the winter.
π€§ Wisconsin's measles outbreak in Grant, Iowa, Lafayette and Vernon counties, west of Madison, is up to 258 confirmed cases β 21 more than on Tuesday.
Measles lingers in the air after an infected person leaves a room, so it spreads easily among anyone who isn't vaccinated.