<sec>
<title>Objectives</title>
<p>The importance of tick-borne diseases is increasing because of climate change, with a lack of long-term studies on tick-borne pathogens in South Korea. To understand the epidemiological characteristics of tick-borne diseases, the monthly distribution of field ticks throughout the year was studied in South Korea between May 2014 and April 2018 in a cross sectional study.</p></sec>
<sec>
<title>Methods</title>
<p>The presence of various tick-borne pathogens (<italic>Rickettsia</italic> species, <italic>Borrelia</italic> species, <italic>Anaplasma phagocytophilum</italic>) was confirmed by using polymerase chain reaction, to provide information for a prevention strategy against tick-borne pathogenic infections, through increased understanding of the relationship between seasonal variation and risk of infection with <italic>Rickettsia</italic> species. This was performed using logistic regression analysis (SPSS 20, IBM, USA) of the data obtained from the study.</p></sec>
<sec>
<title>Results</title>
<p>During the study period there were 11,717 ticks collected and 4 species identified. <italic>Haemapysalis longicornis</italic> was the most common species (<italic>n</italic> = 10,904, 93.1%), followed by <italic>Haemapysalis flava</italic> (<italic>n</italic> = 656, 5.6%), <italic>Ixodes nipponensis</italic> (<italic>n</italic> = 151, 1.3%), and <italic>Amblyomma testudinarium</italic> (<italic>n</italic> = 6, 0.05%) The results of this cross-sectional study showed that <italic>Haemapysalis flava</italic> carried a higher risk of transmission of <italic>Rickettsia</italic> species than other tick species (<italic>p</italic> < 0.05).</p></sec>
<sec>
<title>Conclusion</title>
<p>In conclusion, due attention should be paid to preventing tick-borne infections in humans whilst engaged in outdoor activities in Spring and Autumn, particularly in places where there is a high prevalence of ticks.</p></sec>
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Osong Public Health Res Perspect 2014;5(6):364-369. Published online December 31, 2014
Objectives
The introduction of new rotavirus vaccines into the public sphere makes it necessary to maintain constant surveillance and to heighten public awareness of the appearance of new rotavirus strains. We describe the molecular epidemiology of circulating rotavirus strains after vaccine introduction. Methods
We collected a total of 1070 stool samples from children with gastroenteritis from January 2013 to June 2013. The antigenic prevalence of rotavirus group A was distinguished using enzyme immunoassay. The G and P genotypes of enzyme immunoassay-positive samples were determined with reverse transcription-polymerase chain reaction and nucleotide sequencing analysis. Results
Of the 1070 samples collected, 277 (25.9%) tested positive for rotaviruses by enzyme-linked immunoabsorbent assay. The most prevalent circulating genotype G was G1 (51.3%), followed by G2 (34.7%) and G9 (10.8%). The predominant type of genotype P was P[8] (66.1%), followed by P[4] (31.4%). In this study, nine genotypes were found. G1P[8] was the most prevalent (51.8%), followed by G2P[4] (30.5%), G9P[8] (9.9%), and G2P[8] (4.0%). Several unusual combinations (G1P[4], G3P[9], G3P[8], G4P[6], and G9P[4]) were also identified. Conclusion
Molecular epidemiological knowledge of rotaviruses is critical for the development of effective preventive measures, including vaccines. These data will help us monitor the effectiveness of current rotavirus vaccines.
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Complete genome sequence analysis of rare G4P[6] rotavirus strains from human and pig reveals the evidence for interspecies transmission Rungnapa Malasao, Pattara Khamrin, Kattareeya Kumthip, Hiroshi Ushijima, Niwat Maneekarn Infection, Genetics and Evolution.2018; 65: 357. CrossRef
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