La profilaxis pre-exposición puede salvar vidas

LONDRES – En octubre, dos grupos que investigan la eficacia de un fármaco potencialmente revolucionario en la lucha contra el VIH hicieron algo fuera de lo común. Anunciaron que los ensayos clínicos del fármaco, un antirretroviral llamado Truvada, habían dado resultados lo bastante buenos como para poner fin a la fase aleatorizada de los estudios, y que estaban ofreciendo la píldora a todos los participantes.

Los investigadores hallaron que el riesgo de contagio de VIH en varones gays que tomaron Truvada, además de usar condón durante las relaciones sexuales, fue considerablemente menor. Esto es una nueva prueba de la eficacia de la profilaxis pre-exposición (PPrE), una técnica por la que personas VIH-negativas usan fármacos antirretrovirales para protegerse de la infección. En 2011, en un ensayo financiado por la Fundación Gates, se descubrió que el uso de Truvada en parejas heterosexuales reducía un 73% el riesgo de transmisión del VIH.

De modo que quienes luchan para prevenir la difusión del VIH/SIDA tienen una nueva herramienta en su arsenal. La pregunta es cómo hacerla llegar a quienes más la necesitan: hombres gays en países en desarrollo.

To continue reading, please log in or enter your email address.

Registration is quick and easy and requires only your email address. If you already have an account with us, please log in. Or subscribe now for unlimited access.

required

Log in

http://prosyn.org/YgdYP95/es;
  1. Sean Gallup/Getty Images

    Angela Merkel’s Endgame?

    The collapse of coalition negotiations has left German Chancellor Angela Merkel facing a stark choice between forming a minority government or calling for a new election. But would a minority government necessarily be as bad as Germans have traditionally thought?

  2. Trump Trade speech Bill Pugliano/Getty Images .

    Preparing for the Trump Trade Wars

    In the first 11 months of his presidency, Donald Trump has failed to back up his words – or tweets – with action on a variety of fronts. But the rest of the world's governments, and particularly those in Asia and Europe, would be mistaken to assume that he won't follow through on his promised "America First" trade agenda.

  3. A GrabBike rider uses his mobile phone Bay Ismoyo/Getty Images

    The Platform Economy

    While developed countries in Europe, North America, and Asia are rapidly aging, emerging economies are predominantly youthful. Nigerian, Indonesian, and Vietnamese young people will shape global work trends at an increasingly rapid pace, bringing to bear their experience in dynamic informal markets on a tech-enabled gig economy.

  4. Trump Mario Tama/Getty Images

    Profiles in Discouragement

    One day, the United States will turn the page on Donald Trump. But, as Americans prepare to observe their Thanksgiving holiday, they should reflect that their country's culture and global standing will never recover fully from the wounds that his presidency is inflicting on them.

  5. Mugabe kisses Grace JEKESAI NJIKIZANA/AFP/Getty Images

    How Women Shape Coups

    In Zimbabwe, as in all coups, much behind-the-scenes plotting continues to take place in the aftermath of the military's overthrow of President Robert Mugabe. But who the eventual winners and losers are may depend, among other things, on the gender of the plotters.

  6. Oil barrels Ahmad Al-Rubaye/Getty Images

    The Abnormality of Oil

    At the 2017 Abu Dhabi Petroleum Exhibition and Conference, the consensus among industry executives was that oil prices will still be around $60 per barrel in November 2018. But there is evidence to suggest that the uptick in global growth and developments in Saudi Arabia will push the price as high as $80 in the meantime.

  7. Israeli soldier Menahem Kahana/Getty Images

    The Saudi Prince’s Dangerous War Games

    Saudi Arabia’s Crown Prince Mohammed bin Salman is working hard to consolidate power and establish his country as the Middle East’s only hegemon. But his efforts – which include an attempt to trigger a war between Israel and Hezbollah in Lebanon – increasingly look like the work of an immature gambler.