At the Global Fund to Fight AIDS, Tuberculosis and Malaria, we are acutely conscious that the people we serve, the poorest and most marginalized across the world who suffer most from HIV, TB and malaria, are also likely to be the most affected by COVID-19. In the  countries in which we invest, weak health systems will not be able to contain an outbreak that appears to be able to outflank even the most determined preventative strategies. Those who get infected will not receive the level of care better-funded systems can offer.