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1

Prevalence of hepatitis A virus antibodies in Central-Eastern Poland – a comparative study (1990-2012)

100%

Pachnia D. , Polz-Gruszka D. , Macielag P. , Polz-Dacewicz M.

Current Issues in Pharmacy and Medical Sciences

|

2014

|

tom 27

|

nr 1

17-19

EN

Hepatitis A virus (HAV) is an hepatotropic human picornavirus that is associated only with acute infection of liver. This pathogen is mainly transmitted through the faecal-oral route, by person-to-person contact, and also contaminated drinking water and food. This reserach presenting the comparative seroepidemiological study (1990/1999/2012) on HAV infection was carried out in population from south-eastern Poland. Anti-HAV was tested in 613 subjects from 0 to over 60 years of age and the results were compared with those observed in 1990 and 1989/99. We also analyzed the number of vaccinations in the past decade and their role in preventing disease.

2

Seroprevalence of larval toxocarosis in the Czech Republic

88%

Skulinova K. , Novak J. , Kasny M. , Kolarova L.

Acta Parasitologica

|

2020

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tom 65

|

nr 1

3

Seroprevalence of Coxiella burnetii in Polish cattle herds

88%

Jodelko A. , Niemczuk K. , Szymanska-Czerwinska M.

Bulletin of the Veterinary Institute in Puławy

|

2015

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tom 59

|

nr 4

EN

The aim of the study was to assess the seroprevalence of Coxiella burnetii in cattle herds in different regions of Poland. A total of 1150 serum samples collected from 443 cattle herds from 14 provinces were tested using complement fixation test. The seroprevalence was different in individual regions of Poland. The average percentage of seropositive herds was 40.41% and these herds were identified in each province tested.

4

Prevalence of Anti-HAV IgG Antibodies in the Population of the Łódź Macroregion by Age Group

75%

Henrykowska G. , Kotecka K. , Jabłkowska A. , Buczyński A. , Woźny J.

Polish Hyperbaric Research

|

2021

|

tom nr 3(76)

67--76

EN

Over the last several decades, a gradual decrease in the incidence of hepatitis A and an increase in the population of non-immune people, especially in the group of young people have been observed in Poland. The aim of this study was to assess of the presence of specific anti-hepatitis A virus IgG class antibodies (anti-HAV IgG) in relation to age among non-vaccinated hepatitis A patients. There were statistically significantly more patients up to 45 years of age with anti-HAV IgG negative results than those over 45 years of age, and the Fi-square correlation coefficient (Φ2) was 0.263 between the analyzed variables. The data analysis shows that the number of people with specific IgG antibodies against hepatitis A increases with age. The risk of hepatitis A infection in people under 45 is high due to widespread seronegativity in this age group.

PL

Na przestrzeni ostatnich kilkudziesięciu lat zaobserwowano w Polsce stopniowy spadek zachorowań na wirusowe zapalenie wątroby typu A i zwiększenie populacji osób nieuodpornionych, zwłaszcza w grupie osób młodych. Celem pracy była ocena obecności swoistych przeciwciał anty-HAV IgG w zależności od wieku, wśród osób nie szczepionych przeciw wirusowemu zapaleniu wątroby typu A. Zaobserwowano statystycznie znamiennie więcej pacjentów do 45 roku życia z wynikiem anty-HAV IgG ujemnym niż badanych powyżej 45 roku życia, a współczynnik korelacji Fi-kwadrat (Φ2) wynosił 0,263 pomiędzy rozpatrywanymi zmiennymi. Z analizy danych wynika, że z wiekiem rośnie liczba osób posiadających swoiste przeciwciała przeciw wirusowi zapalenia wątroby typu A w klasie IgG. Ryzyko zakażenia wirusem zaplenia wątroby typu A u osób poniżej 45 roku życia jest wysokie ze względu na powszechną seronegatywność w tej grupie wiekowej.

5

Molecular characterization and seroprevalence of Echinococcus granulosus in wild boars (Sus scrofa) in south-western Iran

75%

Sarkari B. , Mansouri M. , Khabisi S. A. , Mowlavi G.

Annals of Parasitology

|

2015

|

tom 61

|

nr 4

EN

This study presents the first molecular and serological evaluation of Echinococcus granulosus infections in wild boars in Iran. Twenty five wild boars were collected in south-western Iran, during authorized hunting program, from March to October 2013, necropsied and examined for E. granulosus infection. Furthermore, seroprevalence of cystic echinococcosis in hunted boars was evaluated by an ELISA system. A fertile hydatid cyst due to E. granulosus was detected in the lung of one of the animals. Genotype analysis of the isolate was determined by analyzing a mitochondrial gene, cytochrome C oxidase subunit 1 (co1). DNA was extracted from the cyst sample and polymerase chain reaction amplification and DNA sequencing of the specific region of the co1 gene was performed. Molecular evaluation confirmed the presence of a sheep strain, the G1 genotype, in the wild boar in south-western Iran. This is the first report of the presence of G1 genotype of E. granulosus in wild boar in Iran. Serological evaluation of hydatid cyst by antigen-B ELISA revealed E. granulosus antibodies in 5 (20%) of 25 wild boars. A statistically significant difference was observed between the prevalence of E. granulosus antibodies and gender while the difference between the seroprevalence of E. granulosus and age was insignificant. Findings of this study might have important implications for the prevention and control of cystic echinococcosis.

6

Seroprevalence of anti-HAV total antibodies among workers in wastewater treatment plants

75%

Toseva E. I. , Atanasova M. V. , Turnovska T. H.

International Journal of Occupational Medicine and Environmental Health

|

2017

|

tom 31

|

nr 3

307-315

EN

Objectives Data on high frequency of hepatitis A virus (HAV) antibodies for wastewater treatment staff is contradictory. Literature lacks data on the seroprevalence of antibodies to HAV (anti-HAV) among workers in wastewater treatment plants (WWTPs) in Bulgaria. The aim of this study is to establish a specific humoral immune response to hepatitis A virus – anti-HAV total antibodies among staff in WWTPs. Material and Methods A complex study of health and working conditions included 110 subjects working in 3 WWTPs in Bulgaria (74% of all workers in the 3 studied WWTPs and 20% of all employees in Bulgaria registered in 2014 under the wastewater collection, discharge and treatment code of economic activity). Workers had been differentiated in 3 groups on the basis of their occupational work: operators, support staff and other workers exposed to biological agents. Venous blood from all 110 subjects was tested once for carriers of HAV antibodies. Results Anti-HAV total antibodies were found for 52.7% of workers in WWTPs. There is a positive association between activity performed in WWTPs (operators, maintenance personnel and others exposed) and a positive one for the presence of anti-HAV (Chi2 = 6.882, df = 2, p = 0.032). Odds ratio (OR) for hepatitis A increases 2.9 times in the group of operators vs. others exposed to biological agents in WWTPs (OR = 2.914, 95% confidence interval (CI): 1.149–7.393, Fisher’s p = 0.039). Odds ratio for hepatitis A increases 4.3 times in the group of support staff from WWTPs vs. others exposed to biological agents in WWTP (OR = 4.295, 95% CI: 1.075–17.167, Fisher’s p = 0.049). Conclusions Higher frequency of anti-HAV antibodies among operators and maintenance personnel at WWTPs has been established as compared to other workers exposed to biological agents in WWTPs. There is a positive association between increasing age of the workers and the presence of anti-HAV. Int J Occup Med Environ Health 2018;31(3):307–315

7

Toxoplasma gondii seroprevalence in horses from Ukraine: an investigation using two serological methods

75%

Rissanen K. , Galat M. , Kovalenko G. , Rodnina O. , Mikharovskyi G. , Must K. , Jokelainen P.

Acta Parasitologica

|

2019

|

tom 64

|

nr 4

8

Analysis of the prevalence of anti-SARS-CoV-2 antibodies in groups of medical and non-medical professions

75%

Biernacka P. , Piekarska A. , Berkan-Kawińska A.

International Journal of Occupational Medicine and Environmental Health

|

2023

|

tom 36

|

nr 5

643-655

EN

Objectives The assessment of the prevalence of anti-SARS-CoV-2 antibodies in various professional groups is very important. Hence, the purpose of the following study was to analyze the seroprevalence of anti-SARS-CoV-2 antibodies among employees performing both medical and nonmedical professions before the launch of SARS-CoV-2 vaccination. Material and Methods The study was conducted among employers of 1 of the institutions: The Provincial Specialist Hospital of Władysław Biegański in Łódź, Poland, Radio Łódź and the Border Guards of Łódź Airport. Blood samples were collected in December 2020–February 2021. Patients were screened for the presence of SARS-CoV-2 antibodies. Simultaneously respondents were asked to complete a self-designed questionnaire including demographic data, detailed profession, history of SARS-CoV-2 infection and willingness to be vaccinated against COVID-19. Results Seroprevalence was significantly higher in the group of rural residents (p < 0.012), participants who declared previous COVID-19 infection (p < 0.001) and healthcare workers (HCWs) (p = 0.002), especially nurses (35.5%, p = 0.003) and medics worked in areas dedicated to COVID-19 than in other specialties (38.7% vs. 26.8%, respectively, p = 0.017). There was no association between the presence of antibodies and the gender (p = 0.118), age (p = 0.559) or BMI (p = 0.998). Conclusions Healthcare workers, in particular nurses, are at high risk of contracting COVID-19 in the workplace. Occupational infections can occur during occur not only during contact with the patient, but also with members of the medical team who do not show typical symptoms of the disease. Shortages in medical staff may also increase the number of infections among HCWs. Medical and hospital staff providing health services during the COVID-19 epidemic in Poland, may seek compensation in the event of consequences related to SARS-CoV-2 infection. The effectiveness of education and self-discipline in complying to safety rules among HCWs should also be constantly monitored.

9

Seroprevalence and occupational risk survey for Coxiella burnetii among exposed workers in Sicily, Southern Italy

75%

Fenga C. , Gangemi S. , De Luca A. , Calimeri S. , Lo Giudice D. , Pugliese M. , Licitra F. , Alibrandi A. , Costa C.

International Journal of Occupational Medicine and Environmental Health

|

2015

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tom 28

|

nr 5

901-907

EN

Objectives The aim of this survey was to assess the seroprevalence of antibodies against Coxiella burnetii (C. burnetii) in subjects at risk of exposure in Sicily, Southern Italy. Material and Methods Prevalence of IgG antibodies to C. burnetii phase II antigens was evaluated by ELISA in a group of 140 workers at risk of exposure (38 veterinarians, 38 slaughterhouse workers, 44 livestock handlers, 20 laboratory and technical personnel) included in a medical surveillance program and in 42 control subjects. Positive samples were classified as suggestive of prior exposure to C. burnetii. Results Antibodies against C. burnetii were detected in 88 out of 140 (62.9%) exposed workers and in 6 out of 42 (14.3%) subjects of the control group. The variables evaluated did not seem to have a significant effect on seropositivity to Coxiella with the exception of symptoms in the last 6 months preceding the survey. Conclusions Our study demonstrated a high seroprevalence of C. burnetii in the group of exposed workers in comparison to non-exposed subjects of the control group. Clinical illness appears to be rare; nevertheless, physicians should consider Q fever in patients with compatible symptoms and occupational exposure to animals and their products. As aerosols represent the main route of infection in animals and humans, these workers are strongly advised to wear respiratory masks. In addition, occupational physicians should consider routine serologic evaluation and vaccination of occupationally exposed workers.

10

Determinants of seropositivity for SARS-CoV-2 in hospital staff in the second wave of the pandemic in Slovenia

75%

Socan M. , Prosenc K. , Kukec A. , Zaletel-Kragelj L. , Remec T. , Grmek-Kosnik I.

International Journal of Occupational Medicine and Environmental Health

|

2022

|

tom 35

|

nr 5

571-584

EN

Objectives The pandemic caused by the novel coronavirus (SARS-CoV-2) affected a disproportionately high percentage of healthcare workers (HCWs). The aim of the study was to assess the seroprevalence of SARS-CoV-2-specific IgG antibodies in nurses and clinicians working in 2 Slovenian regional hospitals, and to identify the factors associated with seropositivity. Material and Methods The study was designed as a crosssectional study. Clinicians and nurses were invited to participate in November–December 2020. The respondents (813, 65.8%) completed a questionnaire and consented to provide 10 ml of blood for determining the presence of SARS-CoV-2 IgG antibodies. Results The authors observed a seroprevalence rate of 20.4%. The results of the univariate analysis proved that the age of a nurse or clinician was the factor most strongly associated with seropositivity – in fact, the youngest nurses and clinicians were 8.33 times more likely to be seropositive than those in the oldest age group (p = 0.041). Being in contact with a family/household member who was SARS-CoV-2-positive was also a very important factor. In the work-related factors group, being in the contact with a SARS-CoV-2-positive colleague (OR = 2.35, p = 0.026) or being in contact with a COVID-19 patient (OR = 1.96, p = 0.004) correlated with seropositivity. In the primary work location/department group, the only significant association appeared among those working in surgical, ENT or ophthalmology departments. The results of the multivariate analysis further supported the thesis that the age of nurses and clinicians was the factor most strongly associated with seropositivity. The youngest nurses and clinicians were 12.5 times more likely to be seropositive than those in the oldest age group (p = 0.024). Being in contact with a SARS-CoV-2-positive family/household member remained the second most important factor. Conclusions A significant number of clinicians and nurses working in secondary healthcare were infected in the first 9 months of the pandemic.

11

Seroprevalence of Bordetella pertussis antibodies among a group of young adults

75%

Skiba A. , Raman S. , Rzucidlo I. , Sereda D. , Koziol M. M.

Journal of Pre-Clinical and Clinical Research

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2021

|

tom 15

|

nr 3

12

Feline ocular toxoplasmosis: seroprevalence, diagnosis and treatment outcome of 60 clinical cases

75%

Ali K. M. , Abu-Seida A. M. , Abuowarda M. , Ali K. M. , Abu-Seida A. M. , Abuowarda M.

|

13

Human herpesvirus type 8 seroprevalence among patients in immunosuppression state

75%

Trzcinska A. , Litwinska B.

|

nr 3-4

301-303

14

Neospora caninum natural infection in Tunisian rams: serological study and molecular identification of infection in semen

75%

Amdouni Y. , Rouatbi M. , Lassoued N. , Rekik M. , Gharbi M.

Acta Parasitologica

|

2019

|

tom 64

|

nr 4

15

Seroprevalence of Neospora caninum infection in dog population worldwide: a systematic review and meta-analysis

75%

Anvari D. , Saberi R. , Sharif M. , Sarvi S. , Hosseini S. A. , Moosazadeh M. , Hosseininejad Z. , Chegeni T. N. , Daryani A.

Acta Parasitologica

|

2020

|

tom 65

|

nr 2

16

First report on Toxoplasma gondii seroprevalence in free-ranging pigs in Northeastern China

75%

Li Q. , Qin S.-Y. , Li S. , Peng P. , Zhao Q. , Jia H.-L. , Wang C.-R.

Acta Parasitologica

|

2019

|

tom 64

|

nr 2

17

Healthcare workers highly affected during the COVID-19 epidemic wave in Poland prior to vaccination availability: seroprevalence study

75%

Rosińska M. , Stępień M. , Kitowska W. , Milczarek M. , Juszczyk G. , Nowacka Z. , Gardel A. , Hermann A. , Bardoń-Błaszkowska A. , Cudnik R. , Czubak H. , Wolniak-Bińkowska M. , Źródłowska I. A. , Sadkowska-Todys M.

Medycyna Pracy

|

2022

|

tom 73

|

nr 2

109-123

EN

The aim of the study was to assess seroprevalence of anti-SARS-CoV-2 antibodies among healthcare workers (HCW) before introduction of vaccination, in selected areas in Poland as well as to identify potential risk factors and estimate the cumulative incidence of COVID-19 infections in this population.Material and MethodsThe authors conducted a sero-epidemiological, cross-sectional study among HCW of 5 non-COVID-19 hospitals in Poland. The recruitment took place in December 1–23, 2020, all HCW at selected hospitals could volunteer into the study. All persons were screened with rapid SARS-CoV-2 IgM/IgG tests in capillary blood. In case of positive result, 5 ml of venous blood was drawn for confirmatory testing with ELISA assay. The authors estimated prevalence of laboratory confirmed anti-SARS-CoV-2 antibody presence and examined factors associated with positive result. Cumulative incidence was estimated applying 2-source capture-recapture method to serology results and self-report of past infection.ResultsOut of 1040 HCW included in the analysis, one-fourth (25.2%) received a positive result for anti-SARS-CoV-2 antibodies by ELISA test, the prevalence among women was 25.3% (95% CI: 22.5–28.4) and 24.6% (95% CI: 19–31.2) among men. The prevalence of anti-SARS-CoV-2 antibodies was the highest among respondents who declared home contact with a confirmed COVID-19 case, 43.9% (95% CI: 32.4–56.1). It was also elevated among those who indicated contact with patients with COVID-19, 32.5% (95% CI: 26.7–38.8) and business contacts, including at the workplace, 28.9% (95% CI: 22.5–36.3). The estimated cumulative incidence of COVID-19 infections in the population, using the capture-recapture method was 41.2% (95% CI: 38.1–44.2).ConclusionsHealthcare workers remained at increased risk of infection largely due to work-related contacts with infected patients, although home exposure was also common. Estimated cumulative incidence is higher than the antibody prevalence, which indicates the need to monitor HCW for possible immunity waning, also post-immunization immunity. Med Pr. 2022;73(2):109–23

18

Seroprevalence of Neospora caninum in racehorses in Ankara, Turkey

75%

Kilbas Z. G. , Adanir R. , Avcioglu H.

Acta Parasitologica

|

2008

|

tom 53

|

nr 3

EN

To assess seroprevalence of Neospora spp. in asymptomatic horses in Ankara, Turkey, 19 mares and 56 stallions older than 2 years of age were examined using ELISA; 9.3% of the horses were seropositive. Seroprevalence of N. caninum in mares was twice of that in stallions (15.8 vs 7.1%) and all appeared to be asymptomatic.

19

Seroprevalence of selected viral and bacterial pathogens in free-ranging European bison from the Bialowieza Primeval Forest, [Poland]

75%

Salwa A. , Anusz K. , Arent Z. , Paprocka G. , Kita J.

Polish Journal of Veterinary Sciences

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2007

|

tom 10

|

nr 1

EN

Blood was collected from bison that were selected between 1991 and 2001 for poor body condition, cachexia, lameness and balanoposthitis. Sera were tested for antibodies to bovine herpes virus type 1 (BHV-1), bovine viral diarrhoea virus (BVDV), foot-and-mouth disease virus (FMDV), parainfluenza virus type 3 (PI-3), Brucella abortus, Chlamydophila abortus, Coxiella burnetii, and Leptospira interrogans. The results of serological tests showed a prevalence of low titers of a serological reaction to Chlamydophila abortus (45.1%), bovine viral diarrhoea virus (29.5%), Leptospira interrogans (21.3%) and parainfluenza virus type 3 (13.9%). There were differences in the prevalence of antibodies to Ch. abortus between female and male bison. Futhermore, a relationship between age and antibodies to BVDV was observed in older bison. These results suggest that there is some transmission of bacterial and viral pathogens occurring between domestic and wild ruminants grazing in the same pastures in the peripherial areas of Białowieża Primeval Forest.

20

Prevalence of Toxoplasma gondii indirect fluorescent antibodies in naturally- and experimentally-infected chickens [Gallus domesticus] in Thailand

63%

Chumpolbanchorn K. , Anankeatikul P. , Ratanasak W. , Wiengcharoen J. , Thompson R. C. A. , Sukthana Y.

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tom 54

|

nr 3

194-196

EN

Toxoplasma gondii infections in free-range (FR) chickens (Gallus domesticus) are potential public health risks. Antibodies for T. gondii were found in 194 out of 303 serum samples (64.03%) from FR chickens in Thailand tested by the indirect fluorescent antibody test (IFAT, 1:16). To verify the validity of serologic data in this survey, sera from chickens experimentally infected with the RH strain of T. gondii were tested by the IFAT. Antibodies against T. gondii were detected as early as 7 days p.i., peaked at 2 weeks, and then declined by 10 weeks p.i.