South Africa's department of health will continue to dispense Nevirapine until further research into the reliability of the drug in preventing HIV transmission from mother to child is conducted. Concerns about the safety of Nevirapine surfaced after collaborative research conducted by the Medicines Control Council (MCC), manufacturer Boehringer Ingelheim and the National Institute for Communicable Diseases revealed that some HIV positive mothers had developed resistance to the antiretroviral, making it uncertain whether transmission of the virus was being blocked or not.