The country is still reeling from the devastation caused by Cyclone Harold last month and heavy rains last week.
Prime Minister Voreqe Bainimarama urged the public to work with health officials who were conducting a door-to-door LTDD campaign to tackle leptospirosis, typhoid, dengue and diarrhoea.
“LTDD and Covid-19 share the same symptoms and the same precautions can be taken to combat them,” he said.
Bainimarama said Covid-19, and disasters such as cyclone Harold, were testing Fijian resilience.
Meanwhile the government hoped to be able to declare the country Covid-19 free by the time the State of Natural Disaster ended in 13 days.
The government announced at the weekend that only four active cases remained with seven patients recovered from the virus.
Health Minister Ifereimi Waqainabete said there were no new cases since the latest case was recorded two weeks ago.