CLEAN : Experts probe human to human

The video discusses the current statistics of 87 cases and 17 deaths, highlighting a high mortality rate due to several critical conditions. It emphasizes the uncertainty of the situation's full scope, likening it to an iceberg's tip. Testing of 1700 close contacts has mostly returned negative results, except for a specific cluster. The investigation aims to determine if there is a low-level human spread, though no evidence supports this yet, aside from rare instances.

How many close contacts have been tested according to the text?

What evidence is there regarding the spread of the disease among humans?