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Currently, the emergence of a novel human coronavirus, SARS-CoV-2, has become a global health concern causing severe respiratory tra
After the Ebola outbreak was declared in Sierra Leone, in June 2014, early messages about the high mortality rate of Ebola were met
After a series of earthquakes devastated Port-au-Prince, Haiti, on 12 January 2010, safe excreta disposal became an urgent priority.
In peri-urban Monrovia, contaminated hand-dug wells were contributing to cholera outbreaks.