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Dr Sanjay Kalra, DM, Bharti Hospital, Karnal Immediate Past President, Endocrine Society of India 13 July 2021
Zika virus infection has been reported from Kerala. Eighteen cases, including in health care workers have so far been reported. The first case of Zika virus in the state was detected on Thursday after a 24-year-old pregnant woman near Thiruvananthapuram tested positive for the disease. The rising cases have put the state on a high alert.
Here is a quick review of salient facts about Zika virus disease.
The most recent outbreak of Zika occurred in Brazil in 2015-16. It then spread to South and North America, several Pacific islands and also Southeast Asia. Evidence linking it to birth defects and neurological problems prompted the World Health Organization (WHO) to declare it a Public Health Emergency of International Concern in 2016. The 2016 Rio Olympics were held in Brazil under the shadow of this outbreak.
The current cases appear to be a contained outbreak. However, Zika is not new to India. In 2017, three laboratory-confirmed (RT-PCR) Zika virus infection cases were reported in Gujarat and also in Tamil Nadu.
Most of the resources have been dedicated to combating Covid-19 since it was first declared a pandemic in March last year and rightly so. However, the re-emergence of these Zika cases suggest a low level of transmission and do point out the need for active surveillance for other infectious diseases as well before they become a major public health problem. This surveillance has to be continuous and not episodic given the climate that is favorable to vector-borne diseases. Just as we have seen the SARS-CoV-2 evolving into more infectious strains, so could the Zika virus.
All cases of acute febrile illness should be tracked and treated. Dengue or Chikungunya-like symptoms of fever with a skin rash or joint pains, with red eyes, should not be ignored. Such cases could be Zika. All three viral infections share a common vector, the Aedes mosquito.
The public should be educated about the disease including its preventive measures. At the same time, they should be assured that there is no need to panic.
(Source: WHO Zika Virus Fact Sheet 2018; NCDC Fact sheet on Zika Virus Disease Updated 3rd February 2016)
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