Feasibility, accuracy and acceptability of self-sampled human papillomavirus testing using careHPV in Cambodia: a cross-sectional study

OBJECTIVE

Self-sampled human papillomavirus (HPV) testing is a potential option for cervical cancer screening, but research is scarce in Cambodia. We evaluated the feasibility, accuracy, and acceptability of self-sampled HPV testing using careHPV.

METHODS

A cross-sectional study including women aged 20-49 years attending 2 national hospitals in the capital city was conducted. Women underwent both self-sampling and clinician-sampling of specimens, and were then asked to complete an acceptability questionnaire. The paired samples were analyzed for high-risk HPV by careHPV and genotyped by polymerase chain reaction (PCR).

RESULTS

A total of 375 women were eligible for inclusion. Based on PCR, 78.9% were negative for HPV in both self and clinician-samples, 9.9% had a complete HPV type match, and 6.1% had all HPV types in clinician-samples also detected in self-samples. In 5.1%, one or more HPV types identified in the clinician-samples were missed in self-samples. When using careHPV, the overall agreement between the 2 sampling methods was 95.7% (95% confidence interval [CI]=95.8-95.6) with good concordance (κ=0.66, 95% CI=0.56-0.76). Nearly 90% of the women preferred clinician-sampling over self-sampling, citing greater comfort, ease, and speed.

CONCLUSION

Self-sampled HPV testing using careHPV could be an option for cervical cancer screening in Cambodia; however, it requires periodic quality control of handling procedures. In addition, women's health education regarding the accuracy of self-sampled HPV testing and the importance of follow-up in cases of positive results is needed.

Development and evaluation of a cervical cancer screening system in Cambodia: A collaborative project of the Cambodian Society of Gynecology and Obstetrics and Japan Society of Obstetrics and Gynecology

Aim

In Cambodia, the Japan Society of Obstetrics and Gynecology and the Cambodian Society of Gynecology and Obstetrics have an on‐going project, started in 2015, for cervical cancer prevention and treatment. The project, currently aimed at factory workers, includes a women’s health education program that leads into cervical cancer prevention by establishment of a system for early detection and treatment. It begins by health education, screening for human papillomavirus (HPV), followed by colposcopy and quicker treatment of earlier precursor lesions.

Methods

Rates for participant screening, HPV test positivity, cervical intraepithelial neoplasia (CIN) detection and distribution of HPV types were compared between two screening programs, factory‐based and hospital‐based. Some HPV test samples were divided into two, one of which was sent to Japan for a quality‐control check of the Cambodian testing.

Results

The factory‐based participant screening rate was 19% (128/681). HPV was detected more frequently in the factory‐based program participants (12%) than in the hospital‐based program participants (5%). Unfortunately, however, the rate of receiving proper secondary colposcopy screening among the HPV‐positive females was significantly higher in the hospital‐based program (94%) than the factory‐based program (40%) (P < 0.001). The Cambodian laboratory HPV testing accuracy was 92.6%. HPV types demonstrated no significant difference between the two prevention programs.

Conclusion

We could successfully introduce HPV‐based screening, starting from health education. However, low rate of screening, especially secondary screening for HPV positive factory workers was identified. Also, HPV testing could be further improved for accuracy through close monitoring.

Reverse transcriptase mutations in Cambodian CRF01_AE isolates after antiretroviral prophylaxis against HIV Type 1 perinatal transmission

This study explores amino acid changes of the reverse transcriptase (rt) of CRF01_AE isolates from pregnant women naive to antiretroviral drugs before and 2, 6, and 52 weeks after exposure to single dose nevirapine (sdNVP). Results based on 51 observations showed that the proportion of isolates with nonnucleoside reverse transcriptase inhibitor (NNRTI) RMs in the group treated with sdNVP (n = 35) increased from 0% pre-NVP to 22.9% at week 2 postpartum (pp) and 22.9% at week 6 pp. In the group treated with zidovudine + sdNVP (n = 16), the proportion with RM was 31.3% and 18.8% at weeks 2 and 6 pp, respectively. Only a few RMs were still detected at week 52 pp. No apparent subtype-specific treatment-related mutations were detected. NNRTI RM occurrence in CRF01_AE strains is similar to subtype A, D, and CRF02_AG strains after exposure to antiretroviral drugs for PMTCT.

Characterization of mutations in HIV type 1 isolates from 144 Cambodian recently infected patients and pregnant women naive to antiretroviral drugs

A baseline study has been conducted to determine the polymorphism of reverse transcriptase, protease, and envelope genes of HIV-1 isolates from 146 antiretroviral drug-naive Cambodian patients including 22 seroconverters and 124 pregnant women having been diagnosed HIV positive for less than 1 year. Amplification of at least one gene was successful for 144 isolates. All three genes were obtained for 136 isolates. Subtyping showed that CRF01_AE was predominant (130 cases). According to the ANRS September 2004 list, polymorphism substitutions (>50% versus the subtype B consensus) of CRF01_AE at drug resistance positions were observed only in protease: I13V (81%), E35D (87%), M36I (100%), R41K (96%), and H69K (100%). Two strains bore one major resistance mutation to PIs: M46I and N88D. Five other strains carried drug resistance mutations to RTIs: K70R (one strain), V75M (three strains), and K101E (one strain). Of the isolates 4.9% had drug resistance mutations to antiretroviral drugs.

Antenatal care in the capital city of Cambodia: Current situation and impact on obstetric outcome

AIMS

To analyze the situation of antenatal care (ANC) attendance in the capital of Cambodia, Phnom Penh, and the effect of ANC attendance on delivery and newborn outcome, in order to establish a strategy for ANC in the national reproductive health program in Cambodia.

METHODS

This was a health facility-based retrospective cohort study. Background factors (education, household income, and parity) were obtained through interview, and obstetric information (cesarean section, low birth-weight, and maternal complications) were collected from the medical records of women who delivered during 1 month at all the public and private health facilities in Phnom Penh. Relations were analyzed between the number of ANC visits, background factors, and obstetric outcome.

RESULTS

A total of 1204 responses were received from Phnom Penh residents, representing 84% of the estimated number of deliveries in the city. Of these, 89% were from public health facilities. Low educational level, low household income, and multiparity were risk factors for ANC attendance. There was no association between the number of ANC attendances and obstetric outcome.

CONCLUSIONS

Our study has shown that Phnom Penh residents have good access to ANC and delivery care. Low socioeconomic factors are risk factors to ANC. The number of ANC visits had no association with poor perinatal outcome, but further study on quality of ANC and its impact on obstetric outcome is needed. Within the limited resources, safe motherhood strategies need to be targeted to the rural area and to the poor in order to increase access to ANC and delivery care.

Characteristics of antepartum and intrapartum eclampsia in the National Maternal and Child Health Center in Cambodia

AIM

To measure maternal and perinatal outcome and analyze risk factors for antepartum and intrapartum eclampsia, which is one of main causes of high maternal mortality at the top referral hospital in the Kingdom of Cambodia.

METHODS

A hospital-based retrospective study of 164 antepartum and intrapartum eclampsia cases out of 20,449 deliveries.

RESULTS

Overall case-fatality rate was 12%. Rate of stillbirth and low birth weight were 20% and 44%, respectively. Eighty percent of the cases presented signs of severe pre-eclampsia and 27% of the patients who gave birth received cesarean section. Living outside the capital city, teenage pregnancy and twin pregnancy are more frequently associated with eclampsia.

CONCLUSION

Antepartum and intrapartum eclampsia is associated with severe pre-eclampsia and with poor maternal and perinatal outcome. Recommendations to reduce the burden of eclampsia are promoting and improving quality of antenatal care and health education especially in the third trimester; increasing access to high-quality essential obstetric care; improving the service delivery in rural areas; and monitoring the progress by hospital data.