I think there is a natural occurring global population reduction event on going at the moment in Africa. They know now this stared with ONE CASE, a two year old boy. They (the CDC and other authorities) are admitting they don’t have (have not been using) real numbers for reporting and have no idea how many people are infected or have died from the virus. It looked slow at first because of the small numbers involved but now there are thousands of active unconstrained cases infecting others. The Patrick Sawyer case clearly demonstrates the exponential transmission of the disease. He infected 11 others (we know of) before he died.