Health officials probe Argentina pneumonia cases; three dead

Argentine health authorities are investigating a cluster of pneumonia cases from an unknown cause that has led to three deaths out of nine cases identified so far.
 
The illnesses have been centered around a private medical clinic in the city of San Miguel de Tucumán, Argentina’s fifth-largest city, located in the northwest part of the country. 

Health officials there have been giving daily updates as they investigate the cases.

Of the…