Int J Infect. 2020 July; 7(3):e106028.
Published online 2020 July 26.
doi: 10.5812/iji.106028.
Letter
Zoonotic Infections Overview: A Nigerian Perspective
Faisal Muhammad
1, 2, *
1
Department of Public Health, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, Bangladesh
2
Department of Social Work, School of Liberal Arts and Social Sciences, University of Information Technology and Sciences, Dhaka, Bangladesh
*
Corresponding author: Department of Public Health, Daffodil International University (DIU) ,102 and 102/1 Shukrabad, Mirpur Road Dhanmondi, Dhaka, Bangladesh. Email:
fokkanya@yahoo.com
Received 2020 June 02; Revised 2020 June 28; Accepted 2020 July 08.
Keywords: Zoonotic, Infections, Public Health, Nigeria
Dear Editor,
Zoonoses are diseases that are naturally transmissi-
ble between the human and vertebrate animals, through
agents such as bacterial, fungal, and viral agents. Research
shows that over the past 10 years, about three-fourths of
the new diseases that have affected human beings globally
have been caused by pathogens originating from an ani-
mal or products of animal origin (1). One-fifth of the mor-
bidity and mortality in the least developed countries are di-
rectly or indirectly associated with endemic zoonoses (2).
Neglected zoonotic diseases (NZDs) are another serious is-
sue among poor nations, including Nigeria. These diseases
are called neglected because they mostly affect poor popu-
lations who normally live nearness to wild or domestic an-
imals in areas where there is a scarcity of health and suffi-
cient sanitary conditions. These diseases are also neglected
because their burden is habitually concentrated in devel-
oping countries, in which the effort in the present day has
focused on other diseases such as tuberculosis, malaria,
HIV/AIDS, etc. (3). The transmission of these diseases can
occur wherever humans live in both rural and urban set-
tings. Contact with wildlife has increased nowadays due
to the urbanization and the increased ecological changes
that favor the development of some vectors of infection.
Neglected zoonotic diseases take advantage of a double
burden on the standard of life of people by ruining not
only the quality of their health but also the life of livestock
on which they laboriously rely for their survival.
According to the World Health Organization (WHO),
eight diseases are identified as NZDs, including bovine
tuberculosis, rabies, anthrax, echinococcosis, brucel-
losis, leishmaniasis, cysticercosis, and African human
trypanosomiasis. Some NZDs such as brucellosis are
considered important public health problems across the
globe (4). Currently, many zoonotic infections are char-
acterized to be endemic in Nigeria, such as Lassa fever,
tuberculosis, yellow fever, trypanosomiasis, rabies, etc.
There are also some sporadic cases of zoonotic infections
like ascariasis, scabies, strongyloidiasis, etc. (5). In Nigeria,
Lassa fever (LF) is an endemic disease that causes consid-
erable illness and death. An outbreak of LF occurred just
recently from January to May 2018. During this outbreak,
a total of 1,893 cases were reported, leading to about 106
deaths among the laboratory-confirmed cases (6). An
outbreak of yellow fever has been recorded in Nigeria long
ago. The yellow fever outbreaks affected around 120,000
people between 1987 and 1996 across the Nigerian states.
Recently in 2017, a new confirmed case of yellow fever was
reported in Kwara State after 21 years of not reporting a
confirmed case across the country (7). Bovine tuberculosis
(BTB) is also endemic in Nigeria. However, BTB is still
poorly controlled in Nigeria (8). A trypanosomiasis agglu-
tination test was conducted among 474 human subjects,
and about 9.6% of them were tested positive (9). A study
among 149 suspected dog bite cases in Nigeria reported six
confirmed cases of human rabies (10). Neglected zoonotic
diseases have a dual burden because they can be devastat-
ing to both public and animal health. Targeting the animal
reservoir to have optimal health may reduce the risk of
NZDs for humans. Control and prevention measures of
NZDs originating from animals should focus on interven-
tions that target animal reservoirs combined with close
collaborations and partnerships between veterinarians,
physicians, and other stakeholders.
Footnotes
Authors’ Contribution: The whole work was done by
Faisal Muhammad.
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