scholarly journals High seroprevalence of SARS-CoV-2 but low infection fatality ratio eight months after introduction in Nairobi, Kenya

2021 ◽  
Vol 112 ◽  
pp. 25-34
Author(s):  
Isaac Ngere ◽  
Jeanette Dawa ◽  
Elizabeth Hunsperger ◽  
Nancy Otieno ◽  
Moses Masika ◽  
...  
Keyword(s):  
High Seroprevalence

Cow fever – High seroprevalence of Coxiella burnetii antibodies in veterinarians associated with obstetric activity on cattle, Germany, 2009

2010 ◽  
Vol 72 (08/09) ◽  
Author(s):  
H Bernard ◽  
S Brockmann ◽  
N Kleinkauf ◽  
C Klinc ◽  
C Wagner-Wiening ◽  
...  
Keyword(s):  
Coxiella Burnetii ◽  
High Seroprevalence

scholarly journals Seropositivity to canine tick-borne pathogens in a population of sick dogs in Italy

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Jairo Alfonso Mendoza-Roldan ◽  
Giovanni Benelli ◽  
Marcos Antonio Bezerra-Santos ◽  
Viet-Linh Nguyen ◽  
Giuseppe Conte ◽  
...  
Keyword(s):  
Borrelia Burgdorferi ◽  
Serological Test ◽  
Control Strategies ◽  
Central Italy ◽  
Rickettsia Conorii ◽  
High Seroprevalence ◽  
The South ◽  
Serum Samples ◽  
Serological Tests ◽  
Distribution Maps

Abstract Background Canine vector-borne diseases (CVBDs) associated to ticks are among the most important health issues affecting dogs. In Italy, Ehrlichia canis, Anaplasma spp., Rickettsia conorii and Borrelia burgdorferi (s.l.) have been studied in both healthy canine populations and those clinically ill with suspected CVBDs. However, little information is currently available on the overall prevalence and distribution of these pathogens in the country. The aim of this study was to assess the prevalence and distribution of tick-borne pathogens (TBPs) in clinically suspect dogs from three Italian macro areas during a 15-year period (2006–2020). Methods A large dataset (n = 21,992) of serological test results for selected TBPs in three macro areas in Italy was analysed using a Chi-square test to evaluate the associations between the categorical factors (i.e. macro area, region, year, sex and age) and a standard logistic regression model (significance set at P = 0.05). Serological data were presented as annual and cumulative prevalence, and distribution maps of cumulative positive cases for TBPs were generated. Results Of the tested serum samples, 86.9% originated from northern (43.9%) and central (43%) Italy. The majority of the tests was requested for the diagnosis of E. canis (47%; n = 10,334), followed by Rickettsia spp. (35.1%; n = 7725), B. burgdorferi (s.l.) (11.6%; n = 2560) and Anaplasma spp. (6.2%; n = 1373). The highest serological exposure was recorded for B. burgdorferi (s.l.) (83.5%), followed by Rickettsia spp. (64.9%), Anaplasma spp. (39.8%) and E. canis (28.7%). The highest number of cumulative cases of Borrelia burgdorferi (s.l.) was recorded in samples from Tuscany, central Italy. Rickettsia spp. was more prevalent in the south and on the islands, particularly in dogs on Sicily older than 6 years, whereas Anaplasma spp. was more prevalent in the north and E. canis more prevalent in the south and on the islands. Conclusions The results of this study highlight the high seroprevalence and wide distribution of the four TBPs in dogs with clinically suspected CVBDs from the studied regions of Italy. The very high seroprevalence of B. burgdorferi (s.l.) exemplifies a limitation of this study, given the use of clinically suspect dogs and the possibility of cross-reactions when using serological tests. The present research provides updated and illustrative information on the seroprevalence and distribution of four key TBPs, and advocates for integrative control strategies for their prevention. Grapic abstract

scholarly journals Hepatitis E Virus Occurrence in Pigs Slaughtered in Italy

Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 277
Author(s):  
Eleonora Chelli ◽  
Elisabetta Suffredini ◽  
Paola De Santis ◽  
Dario De Medici ◽  
Santina Di Bella ◽  
...  
Keyword(s):  
Hepatitis E Virus ◽  
Phylogenetic Analyses ◽  
Hepatitis E ◽  
Rt Pcr ◽  
High Seroprevalence ◽  
Genotype 3 ◽  
Sporadic Cases ◽  
Wild Boar Meat ◽  
Small Clusters ◽  
Frequent Exposure

In Europe, foodborne transmission has been clearly associated to sporadic cases and small clusters of hepatitis E in humans linked to the consumption of contaminated pig liver sausages, raw venison, or undercooked wild boar meat. In Europe, zoonotic HEV-genotype 3 strains are widespread in pig farms but little information is available on the prevalence of HEV positive pigs at slaughterhouse. In the present study, the prevalence of HEV-RNA positive pigs was assessed on 585 animals from 4 abattoirs located across Italy. Twenty-one pigs (3.6%) tested positive for HEV in either feces or liver by real-time RT-PCR. In these 21 pigs, eight diaphragm muscles resulted positive for HEV-RNA. Among animals collected in one abattoir, 4 out of 91 plasma tested positive for HEV-RNA. ELISA tests for the detection of total antibodies against HEV showed a high seroprevalence (76.8%), confirming the frequent exposure of pigs to the virus. The phylogenetic analyses conducted on sequences of both ORF1 and ORF2 fragments, shows the circulation of HEV-3c and of a novel unclassified subtype. This study provides information on HEV occurrence in pigs at the slaughterhouse, confirming that muscles are rarely contaminated by HEV-RNA compared to liver, which is the most frequently positive for HEV.

scholarly journals High Seroprevalence of Bloodborne Viruses among Street‐Recruited Injection Drug Users from Buenos Aires, Argentina

2003 ◽  
Vol 37 (s5) ◽  
pp. S348-52 ◽  
Author(s):  
Mercedes Weissenbacher ◽  
Diana Rossi ◽  
Graciela Radulich ◽  
Sergio Sosa‐Estáni ◽  
Marcelo Vila ◽  
...  
Keyword(s):  
Injection Drug Users ◽  
Drug Users ◽  
Buenos Aires ◽  
Injection Drug ◽  
High Seroprevalence ◽  
Bloodborne Viruses

scholarly journals High Seroprevalence of Rift Valley Fever and Evidence for Endemic Circulation in Mbeya Region, Tanzania, in a Cross-Sectional Study

2012 ◽  
Vol 6 (3) ◽  
pp. e1557 ◽  
Author(s):  
Norbert Heinrich ◽  
Elmar Saathoff ◽  
Nina Weller ◽  
Petra Clowes ◽  
Inge Kroidl ◽  
...  
Keyword(s):  
Rift Valley ◽  
Rift Valley Fever ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
High Seroprevalence ◽  
Cross Sectional ◽  
Valley Fever

scholarly journals High seroprevalence against hepatitis E virus in patients with chronic hepatitis C virus infection

2017 ◽  
Vol 88 ◽  
pp. 39-45 ◽  
Author(s):  
Åsa Mellgren ◽  
Miriam Karlsson ◽  
Marie Karlsson ◽  
Martin Lagging ◽  
Rune Wejstål ◽  
...  
Keyword(s):  
Chronic Hepatitis ◽  
Hepatitis C Virus ◽  
Hepatitis C ◽  
Virus Infection ◽  
Chronic Hepatitis C ◽  
Hepatitis E Virus ◽  
Hepatitis E ◽  
Hepatitis C Virus Infection ◽  
High Seroprevalence ◽  
Chronic Hepatitis C Virus

scholarly journals The ears of the African elephant: unexpected high seroprevalence of Plasmodium ovale and Plasmodium malariae in healthy populations in Western Africa

2014 ◽  
Vol 13 (1) ◽  
Author(s):  
Cécile Doderer-Lang ◽  
Pascal S Atchade ◽  
Lydia Meckert ◽  
Elodie Haar ◽  
Sylvie Perrotey ◽  
...  
Keyword(s):  
Plasmodium Malariae ◽  
African Elephant ◽  
Plasmodium Ovale ◽  
High Seroprevalence ◽  
Western Africa

scholarly journals High seroprevalence of hepatitis E virus in the ethnic minority populations in Yunnan, China

PLoS ONE ◽  
2018 ◽  
Vol 13 (5) ◽  
pp. e0197577
Author(s):  
Yue Feng ◽  
Yue-Mei Feng ◽  
Songmei Wang ◽  
Fang Xu ◽  
Xuehui Zhang ◽  
...  
Keyword(s):  
Ethnic Minority ◽  
Hepatitis E Virus ◽  
Hepatitis E ◽  
Minority Populations ◽  
High Seroprevalence ◽  
Ethnic Minority Populations
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