<prompt> A resident sustained a needlestick injury while sampling blood of a patient who is HIV positive. A decision is taken to offer him post-exposure prophylaxis. Which one of the following regimens would be the best recommendation?ZidovudineLamivudine for 4 weeksZidovudineLamivudineNevirapine for 4 weeksLopinavirRitonavir for 4 weeksZidovudineLamivudineIndinavir for 4 weeks  <response>: Recommended post-exposure prophylaxis is a combination of LopinavirRitonavir for 4 weeks. NACO recommended PEP regimen : Dosages of the drugs for PEP for adults Recommendation for PEP Duration Tenofovir TDF 300 mg Lamivudine3TC 300 mg FDC One tab Immediately within 2 hours of accidental exposure,from next day one tab once OD, 4 weeks Lopinavir 200 mg Ritonavir 50 mg FDC Two Tab Immediately within 2 hours of accidental exposure,from next day two-tab BD, 4 weeks Reference: Ananthanarayan and Paniker;s Textbook of Microbiology Tenth edition 