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Observational Study
. 2021 Jun 22;7(6):e27623.
doi: 10.2196/27623.

Incidence, Trend, and Mortality of Human Exposure to Rabies in Yemen, 2011-2017: Observational Study

Rihana Taher Abdulmoghni  1 , Ahmed Hasan Al-Ward  2 , Khaled Abdullah Al-Moayed  3 , Mohammed Abdullah Al-Amad  1 , Yousef S Khader  4
Affiliations
Observational Study

Incidence, Trend, and Mortality of Human Exposure to Rabies in Yemen, 2011-2017: Observational Study

Rihana Taher Abdulmoghni et al. JMIR Public Health Surveill. .

Abstract

Background: Rabies remains a neglected and poorly controlled disease throughout the developing world, particularly in Africa and Asia, where most human rabies deaths occur.

Objective: This study aimed to describe the epidemiology of rabies exposures, its trend, and its geographical distribution in Yemen.

Methods: Cumulative data from a rabies surveillance system for the period 2011-2017 were obtained from the National Rabies Control Program as paper-based annual reports. Data included the number of persons bitten by a suspected rabid animal, their gender and age, and the result of the animal's laboratory test. Human cases were defined as those exposed to rabies virus bitten by a suspected rabid animal, exposed to a confirmed rabid animal and then received postexposure prophylaxis (PEP), and deaths occurred after exposure to a confirmed rabid animal after having rabies symptoms during 2011-2017.

Results: From 2011 to 2017, a total of 76,049 persons were bitten by a suspected rabid animal. Of these, 21,927 (28.83%) were exposed to positively confirmed rabid animals and then received PEP, and 295 (0.38%) rabies-related deaths occurred. Of all cases with rabies exposure, 50,882 (66.91%) were males. The most affected age group by animal bites (31,816/76,041, 41.84%), positive exposure (8945/21,927, 40.79%), and rabies deaths (143/295, 48.47%) was 5-14 years. Rabies vaccines and immunoglobulins quantities were least available in 2016 and 2017. The annual incidence rate of exposure to animal bites and rabies exposure was 50 and 14 per 100,000, respectively. The annual mortality rate was 2 per 1,000,000. The highest incidence rate of animal bites was in Dhamar (112 per 100,000) and Ibb (94 per 100,000), whereas the highest incidence of exposed cases was in Amanat Al Asimah (40 per 100,000) and Ibb (37 per 100,000). Mortality rate was the highest in Amanat Al Asimah (6 deaths per 1,000,000) followed by Ibb and Dhamar (4 deaths per 1,000,000 in both).

Conclusions: Rabies remains a worrying health problem in Yemen with higher percentage reported among children and males. Targeting school-age populations by education, communication, and information campaigns about preventive measures is strongly recommended. An electronic system should be introduced to improve reporting. It is important to have a sufficient supply of vaccines and immunoglobulins in control units, especially in the at-risk or impacted governorates. Future studies are suggested to determine incidences and risk factors of disease progression.

Keywords: incidence; mortality; rabies; trend.

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Conflict of interest statement

Conflicts of Interest: None declared.

Figures

Figure 1
Figure 1
Distribution of animal bites cases, exposed cases, and rabies deaths by age groups in Yemen between 2011 and 2017.
Figure 2
Figure 2
Incidence rate of animal bites and exposed cases in Yemen from 2011 to 2017. Blue line: animal bites/100,000; orange line: exposed cases/100,000.
Figure 3
Figure 3
Incidence rate of animal bites, rabies exposed cases, and mortality rate by governorates in Yemen from 2011 to 2017. Blue bars: animal bites/100,000; orange bars: exposed cases/100,000; gray bars: deaths/100,000.
See this image and copyright information in PMC

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