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Prevalence and age distribution of enterobiasis in North-Eastern Bulgaria Cover

Prevalence and age distribution of enterobiasis in North-Eastern Bulgaria

Helminthologia
Volume 57 (2020): Issue 2 (June 2020)
By: K. Stoyanova,  S. Pavlov,  T. Cvetkova and  T. Paunov  
Open Access
|May 2020

Figures & Tables

Fig. 1

Annual prevalence of enterobiasis in Varna District and Bulgaria, 2009 – 2018. Overall annual prevalence of enterobiasis in Varna district (blue line) compared to observed levels for the entire country (green dotted line). * Data from the official analyses of the NCIPD (Rajnova et al., 2018, 2019; Stoyanova, 2019).
Annual prevalence of enterobiasis in Varna District and Bulgaria, 2009 – 2018. Overall annual prevalence of enterobiasis in Varna district (blue line) compared to observed levels for the entire country (green dotted line). * Data from the official analyses of the NCIPD (Rajnova et al., 2018, 2019; Stoyanova, 2019).

Fig. 2

Annual dynamics of the prevalence of enterobiasis in children and adults in Varna District, NE Bulgaria, 2009 – 2018. The observed annual prevalence (labelled points) of enterobiasis in children (blue) and adults (green) is depicted within the exact Clopper-Pearson CI (error bars). The predictions of the binomial linear model and CI are presented by continuous lines and shaded areas correspondingly. The model confirms the observed significant 5 – 6-fold increase in the prevalence of enterobiasis in children during the observed period as compared to the relatively constant levels in adults.
Annual dynamics of the prevalence of enterobiasis in children and adults in Varna District, NE Bulgaria, 2009 – 2018. The observed annual prevalence (labelled points) of enterobiasis in children (blue) and adults (green) is depicted within the exact Clopper-Pearson CI (error bars). The predictions of the binomial linear model and CI are presented by continuous lines and shaded areas correspondingly. The model confirms the observed significant 5 – 6-fold increase in the prevalence of enterobiasis in children during the observed period as compared to the relatively constant levels in adults.

Fig. 3

Average ten-year prevalence of enterobiasis distributed by age, Varna District, NE Bulgaria, 2009 – 2018.
Average ten-year prevalence of enterobiasis distributed by age, Varna District, NE Bulgaria, 2009 – 2018.

Fig. 4

Average ten-year prevalence and odds ratio of enterobiasis in different age groups, Varna District, NE Bulgaria, 2009 – 2018. Average prevalence (columns; left axis) for the observed decade in adults and children 0 – 2, 2 – 6 and 7 – 18-year-old. Odds ratios comparing the relative risk of infection to the risk in the adult population are presented with labelled dots and projected on the right axis. Odds ratios significantly different from 1 are presented with a triangular shape.
Average ten-year prevalence and odds ratio of enterobiasis in different age groups, Varna District, NE Bulgaria, 2009 – 2018. Average prevalence (columns; left axis) for the observed decade in adults and children 0 – 2, 2 – 6 and 7 – 18-year-old. Odds ratios comparing the relative risk of infection to the risk in the adult population are presented with labelled dots and projected on the right axis. Odds ratios significantly different from 1 are presented with a triangular shape.

Enterobiasis prevalence and distribution by age and sex, Varna District, NE Bulgaria, 2009 – 2018

AgeSexPositiveNegativePrevalence % (CI)OR (CI)p
ChildrenFemale27718 0571.51 (1.23 – 1.83)1–
ChildrenMale28919 2631.48 (1.21 – 1.78)0.98

OR male vs female;

 (0.74 – 1.29)		0.80
ChildrenTotal56637 3201.49 (1.30 – 1.71)5.95

OR children vs adults

 (4.05 – 8.73)		2.2x10 – 16
AdultsFemale5825 0000.23 (0.14 – 0.35)1–
AdultsMale278 3370.32 (0.16 – 0.58)1,40

OR male vs female;

 (0.65 – 3.01)		0.17
AdultsTotal8533 3370.25 (0.17 – 0.36)1
TotalFemale33543 0570.77 (0.64 – 0.92)1–
TotalMale31627 6001.13 (0.94 – 1.36)1.47

OR male vs female;

 (1.13 – 1.90)		1.21x10 – 6
DOI: https://doi.org/10.2478/helm-2020-0019 | Journal eISSN: 1336-9083 | Journal ISSN: 0440-6605
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Language: English
Page range: 100 - 108
Submitted on: Feb 8, 2020
|
Accepted on: Mar 9, 2020
|
Published on: May 23, 2020
Published by: Slovak Academy of Sciences, Institute of Parasitology
In partnership with: Paradigm Publishing Services
Publication frequency: Volume open
Keywords:
enterobiasis,
age distribution,
Bulgaria,
Europe,
parasitic diseases
Related subjects:
Life sciences,
Zoology,
Ecology,
Life sciences, other,
Medicine,
Clinical medicine,
Microbiology, virology and infection epidemiology

© 2020 K. Stoyanova, S. Pavlov, T. Cvetkova, T. Paunov, published by Slovak Academy of Sciences, Institute of Parasitology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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