Dengue haemorrhagic fever poses a threat to Kerala

Dengue haemorrhagic fever poses a threat to Kerala

Dengue haemorrhagic fever (DHF) and dengue shock syndrome can emerge as a major health concern if there is yet another dengue outbreak in the state, reports The Times of India, based on the recent sero-prevalence study.
Children under the age group of 10 are in the high-risk category of these new threats, revealed the study.

The dengue sero-prevalence study is a joint initiative of the state government and the World Health Organisation (WHO) with the department of community medicine, Medical College Hospital, Thiruvananthapuram.

The study was carried out in three districts including Thiruvananthapuram, Kollam and Kozhikode, which were the worst-affected in the previous dengue epidemic in the State in 2017.

As part of the study, blood samples collected from 5,236 children were studied. The overall sero- positivity for dengue was found in 29% children, 68.7% was sero-negative for dengue. In about 2.2%, the tests came up as borderline or equivocal.

Dengue sero-prevalence was found to be as high as 41.2% amongst children in Thiruvananthapuram followed by a 25.9% in Kozhikode and 24.2% in Kollam.

Dengue sero-prevalence indicates the rate of previous dengue exposure by detecting dengue-specific immunoglobulin G or IgG antibodies in blood samples. It is an indicator of the intensity of dengue transmission in a community.

The high sero-positivity amongst children is a matter of concern as these children would be at risk of a much severe infection if during the next epidemic, another sero type of the dengue virus is dominant.

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