CD40LG and uveitis: In a retrospective study from India of 37 Indian patients with acute ocular manifestations and IgM‐confirmed chikungunya infection, uveitis was the most common diagnosis, occurring in 16 (43%) patients;75 48 controls from the chikungunya‐endemic area, selected from patients attending the hospital for nonacute problems including cataract and refractive error, were all negative for chikungunya IgM.