Few years back had dengue fever but what is cause of new disease?

please find attached reports of my brother few year back he was infected by dengue fever and recover completely after that last year he get attack of sudden fever and pain in entire body his pain was unbearable we take medicine and he get ok , now again yesterday when he was getting ready to go for work he got attack of sudden pain in body his hand finger twisted and fever , i got these tests upon recomendation of a doctor can any body tell me what is actual reason of his disease….

male age 33 years

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