a stick it into neutral toxic. air salinas knows that the zeek a virus that caused the epidemic in brazil is subtly different from the african one . could that difference explain the villains of the brazilian virus. in there we decided to start by looking at the egress iwm a severe regional african strain and the virus responsible for the epidemic in brazil in the new policy. in early twenty seventeen dr salinas his team already had access to the brazilian virus but to trace its evolution they also needed the african virus that was identified several decades ago when nobody much cared about or studied. the search for the african strain took months. but then the breakthrough.