West Nile virus hit California harder than ever last year, with a record 561 cases of neuroinvasive disease — the most serious type of the illness — reported from the mosquito-borne virus, according to new federal health data released late last week. The number of California cases of neuroinvasive disease was 83 percent higher than the previous record number reported in the state in 2005, according to the U.S. Centers for Disease Control and Prevention.
Are you up for a challenge?
