Recommendations for Cervical Cancer Prevention in Sub-Saharan Africa
(Impact Factor: 3.62).
12/2013; 31S5:F73-F74. DOI: 10.1016/j.vaccine.2012.11.077
Available from: Aloysious Ssemaganda
- "High income countries have reduced mortality through well-organized, systematic screening programs that detect precancerous lesions  . The investment and expense of establishing comprehensive cervical cancer screening programs based on European models are too great for low-resource countries  ; however, new approaches, such as visual inspection with acetic acid (VIA) followed by immediate and appropriate treatment, show some promise in making screening feasible, affordable, and cost-effective . "
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Investigations of vaccine efficacy and immunogenicity for adult females receiving fewer than three doses of human papillomavirus (HPV) vaccine have suggested protection against infection and precancerous lesions. We investigated the immunogenicity of bivalent HPV vaccines among adolescent girls from Uganda who received one, two, or three vaccine doses.
Young girls vaccinated through a government program in Uganda were invited to participate. HPV16- and HPV18-specific antibodies were measured at ≥24 months after the last vaccine dose using an enzyme linked immunoassay in girls who received one (n=36), two (n=145), or three (n=195) doses.
Nearly all subjects (99%) were HPV16 and HPV18 seropositive at the time of blood-draw. Geometric mean antibody levels (GMTs) were: HPV16₁-dose=230 EU/mL, HPV16₂-dose=808 EU/mL, and HPV16₃-dose=1607 EU/mL; HPV18₁-dose=87 EU/mL, HPV18₂-dose=270 EU/mL, and HPV18₃-dose=296 EU/mL. The GMT ratio for 2:3 doses was 0.50 (HPV16) and 0.68 (HPV18) and did not meet the non-inferiority criteria (i.e., lower bound of 97.5% confidence interval of the GMT ratio greater than 0.50). The GMT ratio for 1:3 doses for HPV16 and HPV18 was inferior, but absolute GMTs for one dose were higher than adult women who received one dose (HPV16=124 EU/mL, HPV18=69 EU/mL) where efficacy has been demonstrated.
Even though immunogenicity with less than three doses did not meet a priori non-inferiority thresholds, antibody levels measured ≥24 months after last dose were similar to those of adult women who have been followed for more than eight years for efficacy.
Available from: Olutosin Awolude
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ABSTRACT: Oral human papillomavirus (HPV) infections are less prevalent than genital and anal infections. However, the incidence of oropharyngeal squamous cell carcinomas has increased significantly over the last 2 decades in several countries. At least 90% of these cancers are associated with oncogenic type HPV16. Oral HPV infections are notably more frequent in men than in women, and the incidence of HPV-positive oropharyngeal squamous cell carcinomas has increased, predominantly among mid-adult men. Nevertheless, little is known about the progression of oral HPV infection to cancer, and it remains unclear which medical interventions should be applied to modify the natural history of the disease. This narrative review aimed at non-experts in HPV infection provides an update on oral HPV infection and its clinical management in men. Furthermore, using the cervix as a reference anatomical site, the lessons learned from investigations on cervical HPV infection are also addressed.
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