It also offers more data to support the notion that very early treatment after HIV exposure can prevent establishment of infection in some populations.
Vaccination before exposure does not eliminate the need for treatment after infection, but it simplifies treatment and may provide protection after unrecognised exposure.
"Prompt antiviral therapy in newborns that begins within days of exposure may help infants clear the virus and achieve long-term remission without lifelong treatment by preventing such viral hideouts from forming in the first place, " Persaud said.
"Prompt antiviral therapy in newborns that begins within days of exposure may help infants clear the virus and achieve long-term remission without lifelong treatment by preventing such viral hideouts from forming in the first place, " Persaud says.
The more exposure the flu virus has to the drugs - and in some countries it is available as a preventive treatment before people even catch the infection - the more chance it has of working out how to evade their effects.