While on a jungle trek in the Panamanian jungles, your brother is bitten by a number of mosquitoes. Shortly after returning, your brother developed a fever and complained about nausea and vomiting. His skin color also began to yellow. When he went to the hospital, his doctor told him that his liver function was below normal. The doctor also tells him that there is nothing he can do for your brother other than to provide supportive care. Fortunately, your brother recovered in a little more than a week after the onset of symptoms. Your brother’s traveling companion, who had wisely visited the doctor before his Central American trek, had been vaccinated and did not develop any symptoms, although he, too, was bitten by a number of mosquitoes. What did your brother have and what type of mosquito transmits the agent of this disease?