many african countries in particular, we see that in many states of the us and parts of the world where we have not entered into this business of locking things down. we can see the natural process unfold. we have to, and it is absolutely right that we have to take lessons from other diseases, not hiv because it is very different, but zika is a similar form of infectious disease process. and also very fortunately, we know quite a lot about other coronaviruses. there are four seasonal coronaviruses circulating at the moment. we can...i think it is a reasonable expectation that this virus can and will and maybe already has to that level of endomicity. dr swaminathan. so it is true that the virus has spread globally and is present in most