NVP resistance and PMTCT.

Patients with NVP resistance mutations were analyzed regarding PMTCT (with NVP monotherapy) as a possible cause for the emergence of the mutation. PMTCT as a cause for the mutation's appearance is discussed as “possible” if the mother received PMTCT; it is discussed as “unclear” if the PMTCT status and the dates of birth of the children are unknown; for plausibility reasons PMTCT was excluded (“no”) as a trigger of the NVP mutation if the patient is either male or if a female patient presented with unknown PMTCT history combined with the HIV infection being diagnosed only since the date of birth of the youngest child.