@article{fdi:010089133, title = {{H}epatitis {B} prevalence and associated factors in adults presenting for infection screening in northern {T}hailand}, author = {{S}alvadori, {N}. and {G}authier, {L}. and {G}uy, {M}. and {N}go-{G}iang-{H}uong, {N}icole and {K}hamduang, {W}. and {D}ecker, {L}uc and {A}chalapong, {J}. and {M}ary, {J}.{Y}. and {S}irirungsi, {W}. and {P}ornprasert, {S}. and {A}runothong, {S}. and {O}ngwandee, {S}. and {J}ourdain, {G}onzague}, editor = {}, language = {{ENG}}, abstract = {{B}ackground and aims : {H}epatitis {B} is a leading cause of morbidity and mortality worldwide. {I}n view of the {W}orld {H}ealth {O}rganization 2030 targets, effective screening of chronic infection is crucial. {W}e have assessed the prevalence and risk factors of hepatitis {B} surface antigen in adults presenting for screening. {M}ethods : {F}ree-of-charge and anonymous services for simultaneous hepatitis {B}, hepatitis {C}, human immunodeficiency virus and syphilis screening and counseling were provided in four facilities in northern {T}hailand. {A}nalyses were performed separately in clients born before integration into the 1992 hepatitis {B} vaccine {T}hailand's {E}xpanded {P}rogram on {I}mmunization and in clients born afterwards. {R}esults : {B}etween {O}ctober 2015 and {A}ugust 2020, hepatitis {B} surface antigen prevalence was 7.2 % (185/2578) in clients born before 1992 (95 % confidence interval [{CI}] = 6.2%-8.2 %). {I}n the multivariable analysis, characteristics independently associated with a higher risk of infection were being born male (adjusted odds ratio [a{OR}] = 1.49, 95 % {CI} = 1.10-2.01) and being part of a hill tribe (a{OR} = 1.65, 95 % {CI} = 1.01-2.70). {F}orty-two percent were unaware of their infection. {I}n clients born in 1992 or afterwards, prevalence was 1.5 % (43/2933) (95 % {CI} = 1.1%-2.0 %) and characteristics independently associated with a higher risk were being born between 1992 and 1995 (a{OR} = 1.90, 95 % {CI} = 1.00-3.61), being born male (a{OR} = 2.60, 95 % {CI} = 1.34-5.07), being part of a hill tribe (a{OR} = 5.09, 95 % {CI} = 2.52-10.26) and having ever injected drugs (a{OR} = 4.33, 95 % {CI} = 1.23-15.24). {C}onclusions : {R}isk factor-based screening would miss many chronic hepatitis cases. {S}creening all adults once in their lifetime may be beneficial until the second generation of immunized infants have reached adult age.}, keywords = {{THAILANDE} ; {CHIANG} {MAI} ; {CHIANG} {RAI}}, booktitle = {}, journal = {{J}ournal of {V}irus {E}radication}, volume = {9}, numero = {4}, pages = {100356 [5 ]}, ISSN = {2055-6659}, year = {2023}, DOI = {10.1016/j.jve.2023.100356}, URL = {https://www.documentation.ird.fr/hor/fdi:010089133}, }