Why aren’t we talking about ‘undetectable = untransmittable’ in the Philippines?

With PrEP about to be introduced in the Philippines, Michael David dela Cruz Tan notes that other prevention approaches should not be neglected – i.e. getting PLHIVs into treatment, since evidence now shows that those taking HIV medication as prescribed and have had an undetectable viral load for over six months cannot pass on HIV with or without a condom.