@article{fdi:010078005, title = {{C}hanges in risky sexual behaviours among {W}est {A}frican {MSM} enrolled in a quarterly {HIV} testing and counselling prevention programme ({C}oh{MSM} {ANRS} 12324-{E}xpertise {F}rance)}, author = {{C}oulaud, {P}. {J}. and {S}agaon {T}eyssier, {L}uis and {M}imi, {M}. and {M}aradan, {G}. and {M}ora, {M}. and {B}ourrelly, {M}. and {K}eita, {B}. {D}. and {K}eita, {A}. {A}. and {A}noma, {C}. and {Y}oro, {S}. {A}. {B}. and {D}ah, {E}. {T}. {T}. and {C}oulibaly, {C}. and {M}ensah, {E}. and {A}gbomadji, {S}. and {P}alvadeau, {P}. and {B}ernier, {A}. and {C}astro, {D}. {R}. and {C}ouderc, {C}. and {L}aurent, {C}hristian and {S}pire, {B}. and {C}oh{MSM} {S}tudy {G}roup,}, editor = {}, language = {{ENG}}, abstract = {{O}bjectives {W}hether regular {HIV} testing and counselling reduce risky sexual behaviours in {A}frican men who have sex with men ({MSM}) is still a matter for debate. {W}e aimed to identify behavioural trajectories based on {HIV} risk exposure ({HRE}) and factors affecting their evolution. {M}ethods {D}ata were collected from 621 {HIV}-negative {W}est {A}frican {MSM} ({M}ali, {C}ote d'{I}voire, {B}urkina {F}aso and {T}ogo) included in a community-based cohort providing quarterly {HIV} testing and counselling. {S}ociobehavioural data were collected every 6 months. {HRE} was defined as reporting inconsistent condom use during receptive anal sex with male partners of unknown {HIV} status in the previous 6 months. {U}sing 18-month follow-up data, group-based trajectory modelling helped identify behavioural trajectories and determine the factors associated with their evolution. {HIV} seroconversions (n=67) were specified in each group trajectory. {R}esults {T}wo distinct group trajectories were identified: medium-risk exposure {MSM} ({ME}-{MSM}) (61%, 6.4% of whom having seroconverted) and high-risk exposure {MSM} ({HE}-{MSM}) (39%, 17.5% of whom having seroconverted). {A} significant declining trend in the probability of reporting {HRE} over time ((95% {CI})) was observed for {HE}-{MSM} (from 0.59 (0.48 to 0.70) at {M}0 to 0.31 (0.22 to 0.41) at {M}18), while it remained constant for {ME}-{MSM} (0.034 (0.0 to 0.079)). {T}his can be explained by a progressive use of risk reduction strategies (less receptive anal sex, better knowledge of their partners' status and increasing condom use). {B}eing younger, living in {B}urkina {F}aso, self-considering both a man and a woman and reporting a higher level of depression were all associated with {HE} membership. {A}mong {HE}-{MSM}, {HRE} was higher in those practising transactional or group sex and those experiencing psychological harassment. {C}onclusions {Q}uarterly {HIV} testing and counselling seem to reduce risky sexual behaviours in {HIV}-negative {MSM} at greatest risk of infection. {S}pecific support for young {MSM}, focusing on identity and mental health, is needed to strengthen {HIV} prevention in {W}est {A}frican {MSM}.}, keywords = {{MALI} ; {COTE} {D}'{IVOIRE} ; {BURKINA} {FASO} ; {TOGO} ; {BAMAKO} ; {ABIDJAN} ; {OUAGADOUGOU} ; {LOME}}, booktitle = {}, journal = {{S}exually {T}ransmitted {I}nfections}, volume = {96}, numero = {2}, pages = {115--120}, ISSN = {1368-4973}, year = {2020}, DOI = {10.1136/sextrans-2018-053892}, URL = {https://www.documentation.ird.fr/hor/fdi:010078005}, }