1.Occupational risk factor of health care workers of Hepatitis B infection and its prevention
Naranzul N ; Enkhjargal A ; Тumurbat B ; Tselmeg M ; Nandintsetseg Ts ; Tserendavaa E ; Baatarkhuu O ; Burmaajav B
Mongolian Medical Sciences 2020;191(1):87-95
Hepatitis B (HBV) and C (HCV) are viral infections which can cause acute and chronic hepatitis
and are the leading causes for hepatic cirrhosis and cancer, thus creating a significant burden to
healthcare systems due to the high morbidity/mortality and costs of treatment. The risk of HBV
infection in an unvaccinated person from a single HBV-infected needle stick injury ranges from 6–30.
The prevention of HBV infection among HCWs has become a crucial issue. HBV can effectively be
prevented by vaccination. A safe and effective HBV vaccine has been available since the 1980s and
can prevent acute and chronic infection with an estimated effectivity of 95%. In 2017, the São Paulo
Declaration on Hepatitis was launched at the World Hepatitis Summit 2017, calling upon governments
to include hepatitis B vaccines for HCWs in national immunization programs. The vaccine is 95%
effective in preventing infection and its chronic consequences and has an outstanding record of
safety and effectiveness. Data on current hepatitis B vaccine coverage among HCWs in Mongolia
is scarce. According to Azzaya et al, the protection level of the subjects was 67.2% >100 mIU/ml,
18.8%, 11-100 mIU/mL and 14.1%, 0-10 mIU/mL based on antibody titer level respectively among the
vaccinated HCWs at the 2nd Central hospital. Thus, the HBV vaccination among public and private
sector HCWs in Mongolia to inform the health authorities about the HCWs HBV vaccination status
along with associated problems and challenges for further improving vaccination strategy among
HCWs.