During a significant increase of 55% in chikungunya cases this year, the health department is planning to conduct genomic sequencing of samples to detect potential mutations. Uncommon symptoms such as hyperpigmentation and neurological issues have been identified. In response to the nearly 55% surge in chikungunya cases this year compared to last year, the health department in Mumbai aims to analyze positive samples through genomic sequencing to identify any genetic changes in the virus. State health officials emphasized that unconventional symptoms like hyperpigmentation and neurological problems are rarely seen but may arise with co-infections like dengue or Japanese encephalitis. A rapid action team has been established to investigate the reasons behind the rise in chikungunya cases and has issued guidelines for the collection and analysis of samples. Specific blood samples from patients displaying neurological symptoms will be sent to research institutes for further examination to explore the presence of neurotropic viruses and potential mutations. The genomic sequencing process will provide insights into any alterations that may have occurred in the virus."We will start sequencing once we receive enough samples, particularly from ICU patients or those with severe symptoms," he mentioned. Medical professionals in private hospitals in the city reported a significant rise in chikungunya cases this year, with some patients requiring hospitalization to manage their prolonged high fever and neurological issues for up to 10 to 15 days. There has been an increase in cases among children this year as well, with an eight-month-old boy being admitted to SRCC Children's Hospital in Haji Ali in early August. Dr. Bhupendra Avasthi, a pediatrician at Surya Children's Hospital in Santa Cruz, noted that children born to mothers who tested positive for chikungunya may experience hyperpigmentation as a symptom. He emphasized that hyperpigmentation is a well-known symptom of chikungunya.