An increase of 55% in chikungunya cases this year has prompted the health department to plan genomic sequencing of samples to detect potential mutations. Uncommon symptoms such as hyperpigmentation and neurological issues have been observed. In response to the significant rise in chikungunya cases this year compared to last year, the health department in Mumbai intends to conduct genomic sequencing on selected samples to identify any genetic changes in the virus. State health officials emphasized that rare symptoms like hyperpigmentation and neurological problems are not new but may occur in cases of chikungunya patients with co-infections such as dengue or Japanese encephalitis. A rapid action team has been established to investigate the reasons behind the increase in chikungunya cases and has issued guidelines for collecting and analyzing samples. Samples showing neurological symptoms or hyperpigmentation are to be sent to research institutes for further evaluation. Genomic sequencing will help determine if any mutations are present in the virus."We will start sequencing once we have sufficient samples, especially from patients in the ICU or those with severe symptoms," stated the researcher. Healthcare professionals at private hospitals in the city noted a significant increase in chikungunya cases this year, with some patients requiring hospitalization to manage their prolonged high fever and neurological complications. This year, children have also been affected, as evidenced by the admission of an eight-month-old boy to SRCC Children's Hospital in Haji Ali in early August. Dr. Bhupendra Avasthi at Surya Children's Hospital in Santa Cruz mentioned that children born to mothers with chikungunya may exhibit hyperpigmentation as a symptom, which is a well-documented characteristic of the disease.