In Nigeria, the pharmaceutical giant Pfizer is facing criminal charges for its alleged role in the deaths of children given an unapproved drug in a clinical trial. State authorities have charged the company on eight counts and are seeking more than $2 billion in damages. The lawsuit alleges Pfizer gave around 100 children an untested drug called Tovan known to have life-threatening side effects and without the consent of their families. Nigeria says the testing led to an unspecified number of deaths and left others deaf, paralyzed, blind or brain-damaged.