Amid a 55% increase in chikungunya cases this year, the health department plans to analyze genetic material from samples to identify potential mutations. Uncommon symptoms like hyperpigmentation and neurological problems have been reported. State officials in Mumbai have noted a nearly 55% surge in cases of chikungunya viral fever this year compared to the previous year. The decision has been made to conduct genetic analysis on selected positive samples to search for any variations in the virus. State health authorities have noted that apparently new symptoms like hyperpigmentation and neurological issues are rare and may be associated with co-infections of dengue or Japanese encephalitis. A rapid action team has been established to investigate the factors contributing to the rise in chikungunya cases from 1,702 in 2023 to 2,643 in 2024. The team has provided guidelines for local officials on collecting and sending samples for detailed analysis to research institutes in Pune. This includes collecting blood samples from patients showing specific neurological symptoms. The aim is to identify potential mutations through genomic sequencing. Dr. Rajesh Karyakarte from B J Medical College highlighted the importance of genomic sequencing in detecting mutations in the virus."We will start sequencing once we have enough samples, especially from patients in the intensive care unit or with severe symptoms," stated a healthcare professional. Private sector doctors in the city noted a significant rise in chikungunya cases this year, with several patients requiring hospitalization to manage prolonged high fever and neurological complications. There has been an increase in chikungunya cases among children, including an eight-month-old boy who was admitted to SRCC Children's Hospital in Haji Ali in early August. At Surya Children's Hospital in Santa Cruz, pediatrician Dr. Bhupendra Avasthi observed hyperpigmentation in children born to chikungunya-positive mothers, a known symptom of the disease.