Udupi has the highest number of dengue infections in the state (213) followed by Bengaluru city (195), Belagavi (145), Dakshina Kannada (127) and Ballari (69).
The state has also seen 457 chikungunya cases till date. Shivamogga is the worst affected district with 81 cases, followed by Kolar (77).
There are multiple dengue patients admitted in Bengaluru hospitals. Though compared to previous years, the number of dengue cases has reduced in the state since the beginning of the pandemic, authorities are on alert against mosquito-borne infections. In 2020, Karnataka saw 3,823 dengue cases and five deaths. Intermittent rainfall patterns are an added concern as it leads to fresh-water puddles, say authorities. Officials, however, admit that the due to Covid-19, the focus was not on dengue surveillance, which took a beating like all other public health measures.
Dr Ramesh K Kaulgud, joint director, National Vector Borne Disease Control Programme, health and family welfare department, said there are no suspected cases of Zika in Karnataka so far.
The department has directed all districts to put in place vector-management plans to prevent outbreak of Zika. Monsoon tends to facilitate the spread of Aedes mosquito, which is a vector for Zika virus. “Dengue cases usually see a surge during monsoon, and health workers across the state have been directed to take up effective survey of larvae breeding to prevent dengue,” Dr Kaulgud said, adding no severe cases of dengue have been seen in the state and no deaths have been caused by it in 2021 so far.
“Mosquitoes breed even inside homes and on terraces where there is stagnant water. The best way to prevent dengue is to use mosquito nets, maintain hygiene and make sure there is no larvae production inside the house,” said a senior health official.
Dr BK Vijendra, chief health officer, BBMP, said the Palike is monitoring dengue cases and preventive modalities. “As of now, dengue is very much under control. Health officers in the city limits have been instructed to keep a watch on dengue and chikungunya,” he said. BBMP accounts for 15% of the total dengue cases in the state.
Dr SM Prasad, paediatrician from north Bengaluru, said the need is to avoid mosquito bites in the morning and prevent water from stagnating in and outside homes. He came across a case of a 13-year-old girl who tested positive for dengue in NS1 antigen test on July 7, which proved current infection. “Acute tiredness, fever and rashes are the typical symptoms of dengue and one must be cautious, especially as monsoon has begun,” said Dr Prasad.