Following predictions of significant rainfall and flooding, the Nigeria Center for Disease Control and Prevention has put ten states on high alert, alerting the affected areas to an increased risk of disease epidemics, including cholera. According to forecasts from the Federal Ministry of Environment and the Nigerian Meteorological Agency, parts of Adamawa State, Enugu State, Kaduna State, Kogi State, Niger State, Osun State, Oyo State, Plateau State, Taraba State, and Kwara State will see heavy rainfall between April 13 and 17, 2026, according to a statement issued on Wednesday by Jide Idris, Director-General of the NCDC.
Idris stated that Nigeria's public health calendar is at a critical juncture for issuing the warning. The nation is about to enter the seasonal window during which cholera cases typically spike, and preliminary monitoring data already indicate that infections are rising in several states.
According to data from past outbreaks in Nigeria, cholera cases frequently increase during the rainy season in flood-prone states, particularly in areas with inadequate waste management and restricted access to drinkable water. Thousands of suspected cases have been reported each year during periods of high transmission in previous years; treatment delays and inadequate health facilities are mostly to blame for deaths.
Beyond cholera, Idris cautioned that the impacted states are also more vulnerable to other diarrheal illnesses and mosquito-borne infections like malaria, which is still common and contributes significantly to the country's disease burden.
He went on to say that those living in the designated states would also experience healthcare service disruptions, especially in poor and rural areas, as well as injuries like snakebite and drowning.
The head of the NCDC emphasized that early action and public adherence to preventive measures can lessen the potential health disaster, notwithstanding the risks. Additionally, he urged local authorities and community leaders in the ten states to step up environmental sanitation initiatives, such as clearing obstructed drainage systems and raising awareness of hygiene at the local level.
Idris mentioned that the NCDC is working closely with state health ministries to improve monitoring systems, get ready for emergencies, and ensure quick responses in areas at high risk. He urged state governments to activate multisectoral emergency frameworks, particularly in water, sanitation, and hygiene services.
Due to a mix of climate instability, rising urbanization, and insufficient drainage infrastructure, Nigeria's periodic flooding cycle has continued to present serious public health issues. Analysts caution that flood-related illness outbreaks will continue to be a persistent hazard, especially in vulnerable areas, if resilient systems are not continuously invested in.
Health officials emphasize that community collaboration, early response, and vigilance will be crucial in averting preventable illness and deaths as heavy rains loom over the designated areas.
