| 1 | In doing so they would be inviting disease. | |
| 2 | A person needs only to inhale a small number of these to be infected. | |
| 3 | Infected adults, especially those with no symptoms, should be offered treatment. | |
| 4 | However, the efficacy of both diminishes the longer a person has been infected. | |
| 5 | More women could be entering marriage already infected, he says. Or they could be getting H.I.V. |