Background
Hurricane Iota, occurred on November 16, 2020, was the strongest recorded in Colombia, destroying 98% of the infrastructure of Providencia and Santa Catalina Islands. This study assesses needs by describing hygienic-sanitary conditions and prioritised health events, 16 months after the hurricane.

Methods
Cross-sectional study considering adaptation of the CASPER methodology. The sample estimated the number of constructions as primary units, random spatial stratified sampling by sectors was carried out using QGis. Instrument was built with 41 questions in Epicollect5 applied in person. The notification of events of public health interest is reviewed. Descriptive analyses, multiple correspondence and chi-square were performed using Excel and R.

Results
44.7% of the 360 homes interviewed required total repair-reconstruction. Aqueduct, pipette gas, toilet access and sink services had a statistically significant decrease (p < 0.05). 67.8% of homes use rainwater and 32.5% do not perform water treatment for consumption. 57.5% have not carried out vector fumigation, 75% dispose of excreta in septic well, 60.8% report an increase in rodents and 74.7% increase in vectors. 57.2% of homes have debris around. 17.2% of those interviewed report incomplete COVID-19 vaccination scheme. 75.5% have difficulty delivering medicines by their insurer and 71.38% report a history of chronic diseases. Probable anxiety disorder 9.9% and 7.2% depression. There were 10 outbreaks of foodborne diseases and two suicide attempts.

Conclusion
Basic hygienic-sanitary services decreased significantly after the hurricane; there are possible risk factors adjacent to homes that favour the transmission of diseases. Mental health involvement was found. It is recommended to implement prevention measures in water consumption, disposition of useless, surveillance-follow-up to events of interest in public health and implement mental health strategies.