“…Usually HIV-exposed infants receive since birth a zidovudine (ZDV) PEP, that should be started as earlier as possible, better within 12 h of delivery, even if mothers correctly took antiretrovirals. Neonatal PEP with ZDV when infants are born to women with undetectable viral load could be shortened to 4 weeks (instead of 6) [ 152 ]. If risk of MTCT is higher, combination antiretrovirals regimens with two or more drugs are increasingly preferred without further side effects compared with ZDV-monotherapy prophylaxis [ 153 ].…”