marburg virus map of africa under a magnifying glass

marburg virus hemorrhagic fever outbreak transmission reservoir fruit bats symptoms diagnosis treatment prevention vaccine africa incubation period zoonotic fatality rate blood organs infection humantohuman isolation quarantine clinical trials antiviral development biological warfare biohazard public health pandemic infectious disease candidate immunity filovirus epidemic map under magnifying glass font brand text cartoon diagram illustration line drawing advertising presentation logo circle poster label sketch document design organ pattern number