WHO is the control of infectious diseases industry leads and the coordination of the international response in the event of an epidemic. Her work during these episodes is closely watched, and consequently often criticized, while the rest of the time she is rarely thought about. In 1996, the industry leads WHO lost international coordination of the response to the HIV/AIDS pandemic, entrusting it to a specific organization, the Joint United Nations Program on HIV/AIDS (UNAIDS), considered to be in a industry leads better position to provide necessary multisectoral response (including economic aspects, human rights, gender, etc.).
In 2003, the WHO was criticized for industry leads having delayed in warning of the existence of a SARS (severe acute respiratory syndrome) epidemic, due to the concealment of the first cases by the Chinese authorities (an international alert was launched only in March 2003, industry leads when there were rumors about the first patients in November 2002). In the case of H1N1 in 2009, the WHO was criticized for having declared an H1N1 flu pandemic too quickly, which caused the purchase by the States of millions of industry leads doses of vaccines that were ultimately useless, since the virus turned out to be not very virulent.
In 2014, during the Ebola industry leads epidemic in West Africa, the WHO was instead accused of having declared an international emergency too late, in August, after acknowledging that the number of cases had been largely underestimated until then (when Doctors Sin Fronteras had industry leads warned about the seriousness of the situation in the boreal spring of 2014). This time, in the case of Covid-19, the WHO declared an international public health emergency situation on industry leads January 30, 2020 (which allows calling for international mobilization), then a pandemic on March 11 (due to the increase number of cases and countries affected).