Possible breakthrough in Cambodia mystery illness? Dr. Sanjay Gupta on the virus that could be sickening many

There's a possible breakthrough in Cambodia, where health workers are trying desperately to figure out what caused the mysterious deaths of 64 children.

Samples taken from 24 of the patients found more than half tested positive for Enterovirus Type 71. That's a common cause of hand, foot and mouth disease that can also be responsible for severe neurological complications, especially in children.

CNN chief medical correspondent Dr. Sanjay Gupta reported live from Cambodia on "Starting Point" this morning to explain where things stand.

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