Background

Diptheria is a vaccine preventable disease which has been causing sporadic outbreaks in Indonesia since 2011. Despite vaccination coverage, the optimum herd immunity level was below the necessary 90%.

Materials and methods

Data was obtained from routine report form from district and provincial health office, routine report form district and referral hospital. Surveillance data was obtained from the Directorate- General of Disease Control and Environmental Health, Ministry of Health, Republic of Indonesia. Case tabulated by province/regencies over time for December.

Results

In December 2017, a spike of cases occurred. There were 242 cases and 44 deaths across more than 5 Indonesian provinces occurred. More than 50% were aged between 1 to 14 years old. In 2017, most cases are reported in the provinces of East Java (331), WestJava (170), Banten (127) and Aceh (109).The annual 2017 CFR by province is 3.63% in East Java (12/331); 8.24% in West Java (14/170);6.3% Banten (8/127); 3.67% in Aceh (4/109).  In addition to these provinces, the CFR rate in Bangka Belitung Islands was 50% (2/4);9.09% in Riau (1/11); 10% in Kalimantan Barat (1/10); and 3.64% in Daerah KhususIbukota (DKI) (2/55).

Conclusions

Countermeasures were immediately implemented by the authorities resulting in a decline of cases.

Acknowledgements

We would like to thank Directorate- General of Disease Control and Environmental Health, Ministry of Health, Republic of Indonesia.

Keywords: Diptheria, Outbreak, Surveillance