Male Aedes albopictus mosquitoes. Zika virus is among the viruses spread by the species. Credit: Reuters/Ma Qiang/Southern Metropolis Daily Thiruvananthapuram: A fourth case of Zika virus was reported from Kerala on Tuesday taking the infection count in the state to 23, the health department said. “A 16-year-old Thiruvananthapuram native girl was found infected with the…