SAO PAULO (AP) -- Brazilian teams are on alert because of a dengue fever outbreak that has already affected some of the country's top clubs.
Three players were diagnosed with the mosquito-borne disease this week, including Corinthians striker Paolo Guerrero.
Players have been forced to use insect repellent during practice sessions and clubs have asked health officials to check their training centers for mosquito breeding sites.
In addition to Guerrero, Palmeiras reserve goalkeeper Aranha and young Santos striker Leo Cittadini also have been diagnosed with the disease and won't be able to help their teams in the final stages of the Sao Paulo state championship this month.