One which can be transmitted by the very same Aedes mosquitoes that carry Zika-one that is neurotrophic, and extremely prevalent in Brazil-and that can disrupt brain growth, cause microcephalus, cause a fever, is sexually transmissible, instigates Guillain-Barré syndrome and causes cranial calcifications-the Mycobacterium tuberculosis complex, which includes the Mycobacterium africanum prevalent, yet completely ignored, in the Rhesus monkeys used in the original Zika study.