Despite a low case fatality ratio (CFR), Chikungunya fever is highlighted by a substantial post-chikungunya chronic polyarthralgia, defined as joint pains lasting longer than 6 weeks. study published in 2018, composed of Aruba CHIKV cases, reported that 26% of all serology-confirmed infected patients presented with post-chikungunya polyarthritis. Another study published in 2018, from 2014 French Guiana, reported post-CHIKV rheumatic or musculoskeletal pain at 3 and 6 months of 40% and 31.3% respectively of all RT-PCR proven cases.
