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72 THIRD WHO REPORT ON NEGLECTED TROPICAL DISEASES<br />
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tool for field workers, resulting in higher and faster rates of detection. Studies of the cost−<br />
effectiveness of PCR should be undertaken to determine whether a new active case-finding<br />
strategy is warranted, to detect cases earlier, thereby achieving better treatment outcomes.<br />
_____________________<br />
1<br />
Amoakoh HB, Aikins M. Household cost of out-patient treatment of Buruli ulcer in Ghana: a case study of Obom in Ga<br />
South Municipality. BMC Health Serv Res. 2013;13:507. doi:10.1186/1472-6963-13-507.<br />
2<br />
Grietens KP, Boock AU, Peeters H, Hausmann-Muela S, Toomer E, Ribera JM. “It is me who endures but my family that<br />
suffers”: social isolation as a consequence of the household cost burden of Buruli ulcer free of charge hospital treatment.<br />
PLoS Negl Trop Dis. 2008;2:e321. doi:10.1371/journal.pntd.0000321.<br />
3<br />
Mavinga Phanzu D, Suykerbuyk P, Saunderson P, Ngwala Lukanu P, Masamba Minuku JB, Imposo DB et al. Burden of<br />
Mycobacterium ulcerans disease (Buruli ulcer) and the underreporting ratio in the territory of Songololo, Democratic<br />
Republic of Congo. PLoS Negl Trop Dis. 2013;7:e2563. doi:10.1371/journal.pntd.0002563. eCollection 2013.<br />
4<br />
Porten K, Sailor K, Comte E, Njikap A, Sobry A, Sihom F et al. Prevalence of Buruli ulcer in Akonolinga Health District,<br />
Cameroon: results of a cross sectional survey. PLoS Negl Trop Dis. 2009;3:e466. doi:10.1371/journal.pntd.0000466.<br />
Burden and distribution<br />
The 33 countries in which Buruli ulcer has been detected have mainly tropical and subtropical<br />
climates (Fig. 4.1.1). About 5000 cases annually are reported from 15 of those countries, but<br />
this number is considered low. Since 2010, the number of reported cases has declined gradually,<br />
Fig. 4.1.1 Distribution of Buruli ulcer, worldwide, 2013<br />
Number of reported cases, 2013<br />
> 1 000 No cases reported<br />
500 999<br />
Previously reported cases<br />
100 499<br />
Not applicable<br />
< 100