SAN DIEGO — A particularly severe variant of influenza A is driving a sharp rise in flu cases across San Diego County, with local health experts warning that the strain causes symptoms persisting for weeks.
San Diego County recorded 735 new flu cases in the past week alone, bringing the seasonal total to over 9,400 since June. The county has documented 4,200 additional cases compared to three weeks ago, when 5,200 cases were recorded. Despite the spike, numbers are down compared to the same time period last year.
The subclade K variant of influenza A circulating this season is generating concern among medical professionals due to both its prevalence and severity…