Hos tidligere behandlede patienter opnåede en ligeså stor andel af de patienter, der skiftede fra lamivudin til Emtriva, et virusindhold under 400 kopier/ ml, som af dem, der fortsatte med at tage lamivudin (henholdsvis 73 og 82%) efter 48 uger.
In treatment- experienced patients, the number of patients switching from lamivudine to Emtriva with viral loads below 400 copies/ ml was similar to the number who continued taking lamivudine after 48 weeks (73% and 82%, respectively).