A couple wear protective face masks on the street after the governor of the northern Mexican state of Coahuila said on Saturday that a new case of coronavirus had been confirmed, in Mexico City, Mexico February 29, 2020. REUTERS/Carlos Jasso
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¿Son eficaces las mascarillas fabricadas en casa? No son infalibles, pero es mejor que nada

CASALPUSTERLENGO, ITALY - FEBRUARY 23: A man wearinig a respiratory mask and gloves is pictured on February 23, 2020 in Casalpusterlengo, south-west Milan, Italy. Casalpusterlengo is one of the ten small towns placed under lockdown earlier this morning as a second death from coronavirus sparked fears throughout the Lombardy region. (Photo by Emanuele Cremaschi/Getty Images)
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Mascarillas quirúrgicas, filtrantes y caseras contra el coronavirus: cuáles protegen, cuáles no

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