Kim, Ji-Young;Lee, Hye Jeen;Kim, Me Jin;Kim, Young Ho;Jung, Ji A;Yang, Seung;Hwang, Il Tae;Lee, Hae Ran
Clinical and Experimental Pediatrics
/
v.51
no.4
/
pp.377-382
/
2008
Purpose : The aim of this study is to assess the usefulness of skin test by an inactivated, 1/50 diluted solution of attenuated varicella vaccine in evaluating the immune status to varicella. Methods : Total 41 subjects (22 males, 19 females, aged 1-32 years) were enrolled from July to August, 2005. Past medical history including varicella infection, varicella vaccination were investigated through questionnaires. The skin test solution was prepared from solution of attenuated varicella vaccine(Oka strain) which was inactivated by exposure to room temperature for 10 days and diluted at 1/50 with normal saline. Skin test was done by injecting 0.1 mL of the solution intradermally into the volar surface of the right forearm and sterile normal saline was used as a control on the left forearm. Positive reaction was defined when the transverse diameter of the induration was 5 mm or more. Serum varicella zoster virus specific IgG antibody test by ELISA (enzyme-linked immunosorbent assay) was done. Results : In adults, the sensitivity of the varicella zoster virus skin test compared to ELISA was 94.7% and the positive predictive value was 100%. In children, both the positive predictive value and specificity were 100% but the sensitivity and the negative predictive value were 50% and 30.7% respectively. Children showed smaller skin test reactivity compared to adults. Conclusion : The varicella zoster virus skin test using inactivated, 1/50 diluted solution of attenuated varicella vaccine was proved as one of the useful tools for evaluating the immunity and susceptibility of the varicella zoster virus.
Park, Jung-Han;Youn, Tae-Hyun;Chun, Byung-Yeol;Song, Jung-Hup
Journal of Preventive Medicine and Public Health
/
v.20
no.1
s.21
/
pp.129-136
/
1987
To determine the hepatitis 8 virus infection rate of the medical school students and appropriate time for immunization with hepatitis B vaccine,355 students in the 1st, 2nd and 3rd grades of Medical School of Kyungpook National University who had not been vaccinated and volunteered to participate in this study were tested for HBsAg, anti-HBs and anti-HBc with radioimmunoassay method (Abbott Lab. kit). A questionnaire was administered to ask the history of transfusion, acupuncture and surgery. HBsAg positive students were retested 16 months after the initial test. Overall HBsAg positive rate was 6.8% and the age adjusted rate for male (7.2%) was higher than that for female (4.9%). Anti-HBs positive rate was 35.3% (36.1% for male, 37.9% for female) and anti-HBc positive rate was 45.5% (46.5% for male,44.7% for female). Overall hepatitis B virus (HBV) infection rate was 49.1% and the infection rate for male (50.3%) was slightly higher than that for female (46.5%). HBsAg positive rate and infection rate were increased as the grade increased but it was attributed to the age distribution of the students. HBaAg positive rate for 20 years old students was 1.7%; 21 years, 6.6%; 22 years, 6.1%; 23 years, 12.2%; and 24 years and older, 6.4%. HBV infection rate showed an increasing trend as age increased; 45.8% for 20 years,41.5% for 21 years, 49.5% for 22 years, 55.5% for 23 years and 59.6% for 24 years and older. The age differences in HBsAg positive rates and HBV infection rates did not reach the statistical significance level of 0.05. However, these findings and similar age differences in HBsAg positive rates and HBV infection rates observed in other study suggest that there is a significant age differences. Study of the same age group in other schools and different social classes is warranted to confirm the age difference. Clarification of the reason for such differences would provide a clue to identify the major route of HBV transmission in this age group. Among 26 HBsAg positive students in the initial test, only one student was active hepatitis patient. Out of 24 students who had follow-up test after 16 months 22 students were positive for HBaAg and two students became HBsAg negative and anti-HBs positive. It is obvious that nearly one-half of the medical school students were infected with HBV before 20 years of age and the HBV infection occurs in medical school. Thus, it is recommended to test all the students for HBV infection soon after the admission to the medical school and immunize all the susceptible students with hepatitis B vaccine and give booster as they start to practice at a hospital.
Lee, Kun Song;Son, Jae Sung;Chung, Eun Hee;Bae, Hong Ki;Lee, Mee Jeong;Yu, Jeesuk;Chang, Young Pyo;Park, Woo Sung;Kim, Jae Kyoung;Rheem, Insoo;Roh, Eui-Jung
Pediatric Infection and Vaccine
/
v.16
no.2
/
pp.175-182
/
2009
Purpose : A number of countries have experienced an increase in pertussis during the past decade. In particular, there has been an increase in the incidence rate among adolescents and adults. To learn more about the current epidemiology of pertussis, we studied the prevalence and clinical characteristics of pertussis in children in Cheonan, South Korea. Methods : We collected nasopharyngeal aspirates of 118 patients who were treated for respiratory symptoms at Dankook Univeristy Hospital between March 2008 and September 2009. We performed multiplex PCR for detection of Bordetella pertussis in those aspirates. Results : Of the 118 patients, 10 (8%) were positive by PCR for B. pertussis. Six episodes occurred during the period July to September 2009. Nine of the 10 patients were less than 3 months old. Seven of them had not received DTaP vaccine. The mean duration of coughing before diagnosis was 10.9${\pm}$5.2 days. Ten patients (100%) had paroxysmal cough and 8 (80%) had post-tussive vomiting. Only one patient had fever. One who had complications that include pneumonia, atelectasis and pneumomediastinum developed an absolute increase in leukocyte count (84,400/$mm^3$). There was a statistically significant relation between vaccine being received and development of complications (P =0.033). Conclusion : We suspect that there was an epidemic of pertussis between July and September 2009. Further investigation by a pediatric or nationwide surveillance system is needed to monitor the changing epidemiology for pertussis.
Kim, Myo-Song;You, Seung-Hun;Park, Hye Min;Lee, Min-Taek;Kang, Ye-Jin;Koo, Hyunji;Jung, Sun-Young
Korean Journal of Clinical Pharmacy
/
v.30
no.1
/
pp.19-30
/
2020
Objective: To describe patterns of spontaneous reporting on adverse events following immunization (AEFIs) using the human papilloma virus (HPV) vaccine according to the Brighton Collaboration (BC) criteria. Methods: We used the Korea Adverse Event Reporting System (KAERS) database including vaccinations between 2008 and 2017. To apply BC criteria, we classified 58 BC AEFIs into World Health Organization Adverse Reaction Terminology (WHO-ART) codes. We applied MedDRA standard medical queries that were pre-defined as five BC AEFIs. Terminology mapping between MedDRA and WHO-ART terms was performed by three researchers. Descriptive statistics of individual case safety reports were analyzed according to BC applicability. Disproportionality analyses were performed on each BC AEFI and each preferred AEFI term according to the case-noncase approach; reporting odds ratio (ROR) and 95% confidence intervals (CI) were calculated. Results: Among the 30,266 reports of vaccinations between 2008 and 2017, 2,845 reports included the HPV vaccine. Of these reports, 1,511 (53.1%) included at least one BC AEFI. Reports from physicians or manufacturers included more BC AEFIs than from other reporters. Injection site reactions and fever were frequently reported in BC AEFIs; spontaneous abortion and ectopic pregnancy (ROR, 14.29 [95% CI, 4.30-47.49]) and vasculitic peripheral neuropathy (ROR, 8.57 [95% CI, 2.61-28.10]) showed the highest ROR. Among non-BC AEFIs, dizziness or myalgia were frequently reported; exposure during pregnancy (ROR, 23.95 [95% CI, 16.27-35.25]) and inappropriate schedule of administration (ROR, 22.89 [95% CI, 16.74-31.31]) showed the highest ROR. Conclusion: BC criteria would be applicable for labeled AEFIs, whereas analyzing non-BC AEFIs would be useful for detecting unlabeled AEFIs.
An attenuated Japanese encephalitis virus (JEV) clone SA-14-14-2(Vero) was obtained through successive adaptation of a primary cell adapted strain, SA-14-14-2(PDK) to Vero cell, a continuous line of monkey kidney cells. The virus titer reached above the 107 plaque forming unit (pfu) per mL of culture supernatant with 3 passages in Vero cells and was maintained close to this level in the further passages. The optimum temperature for the virus growth was $35^{\circ}C$. Growth pattern of the virus indicated that optimum time for the virus harvest is 4 days post infection and the virus accomplished rapid initial propagation even in medium containing no serum supplement. The roller bottle (RB) system and the spinner flask (SF) system using micro-carrier (Cytodex-1) for the JEV cultivation were explored. When RB, SF, and T-flask culture system were compared, there was no significant difference in virus yield. Furthermore, the results indicated that virus could be harvested multiple times from 3 days to 9 days post infection; neither severe cytopathic effect (CPE) in the infected cells nor the decrease in the titer was observed on duration of 9 days.
Journal of the korean academy of Pediatric Dentistry
/
v.44
no.1
/
pp.38-46
/
2017
School nurses can play an important role in improving the prognosis of traumatized teeth of school children when they are informed about the immediate and proper dental first aid steps. The purpose of this study were to assess the awareness of school nurses concerning the management of traumatized teeth and to determine if a lecture on dental trauma management could improve school nurses'knowledge on this topic. School nurses in Gwangju and Jeonnam province completed a questionnaire before and after the lecture on the first-aid knowledge with particular focus on the following three categories. Questionnaires are composed of questions asking general information and about knowledge and proper attitude in case of the specific situation on dental trauma. According to previous studies, school nurses' knowledge tended to be higher compared with the teachers. Improvement of knowledge in school nurse was observed in emergency actions, in visiting time, replantation, carriage method, vaccine prescription related with luxation, and in possibility of fragment reattachment related with subluxation and fracture. In conclusion, it is recommended that periodical education are needed for improvement of school nurses'knowledge on proper management of dental trauma emergency.
The objective of this study was to investigate the clinical aspects on bovine abortion and stillbirth in Korea. Three hundred thirty eight bovine fetuses were collected from farms and submitted to the College of Veterinary Medicine, Seoul National University. Submitted fetuses were evaluated for season, parity and gestation stage on abortion during a 3 years period (June, 1999 to April, 2002). Out of four seasons, incidence of bovine abortion was significantly higher in summer than other seasons (P<0.05) due to high temperature and humidity. After surveying of incidence of abortion according to parity, it was concentrated in low parity (1, 2 and 3 parity). However, this result was not caused by parity but because most of surveyed cow was low parity. For surveying the distribution of abortion incidence according to days of gestation, we divided the days of gestation into 3 stages including with early (0∼150 days), middle (151∼250 days) and late (251days∼term). Out of 319 aborted fetuses, incidences of abortion were significantly higher in the middle and late stage than early stage (P<0.05). A high rate (75%) of stock farms did not vaccinate animals, therefore most of cows in Korea were found to have a high risk of becoming infected upon exposure to pathogens. Many of abortions occurred in stock farms where animals of other species were being bred. More studies will be needed to investigate possible linkages between bovine abortion and the breeding of other animal species.
Immunization of layers against Salmonella gallinarum(S.G.) which causes fowl typhoid resulted in production of anti-S.G. IgY rich eggs. Water soluble fraction was obtained from egg yolk using various gum solutions such as 0.1%(Sigma C-3889) λ-carrageenan; 1% and 2% cold water soluble carrageenan; 1% and 2% hot water soluble carrageenan; and 1% cold water soluble carrageenan with 1% hot water soluble carrageenan. Among them, λ-carrageenan 0.1% treatment showed a high recovery rate, possessing high IgY contents. In the range of pH 5-9, more than 70 percent of IgY was existent. Moreover, Anti-S.G. IgY was relatively heat-stable. This study revealed that immunoglobulin against fowl typhoid could be produced successfully by layers and the IgY was sustainable to further processing due to its pH and heat stability. IgY is promising to be utilized for prevention and treatment of fowl typhoid in industrial scale.
Although there is circumstantial evidence that infectious bronchitis(IB) in the Korean layer industry has contributed to severe economic losses, the seroprevalence against IB virus(IBV) and risk factors associated with seropositivity are not well known. During May to October 2007, 820 blood samples were randomly collected from 41 laying hen flocks(20 birds in each flock) with $\geq$ 3,000 birds of 18 week of age or older in three provinces of Korea. The samples size was determined considering a flock-size range of 3,000-65,000 birds, an expected bird-level seroprevalence of $\geq$ 15%, and a 95% level of confidence. Serum samples were examined using a hemagglutination inhibition test for antibodies to IBV. The overall apparent flock-level seroprevalence was 46.3%(95% CI, 31.1-66.6) with no statistically significant differences among provinces(X=1.205, p>0.05). There were 19 positive flocks with one to eight seropositive birds, and 11 of these had one or two seropositive birds. None of the measured parameters were significantly associated with seropositivity against IBV in a subsequent multivariable logistic regression analysis. A longitudinal risk factor studies considering management and vaccination characteristics possibly associated with the IBV flock prevalence would be beneficial.
Jung, Seungwon;Lee, Joon Hee;Kang, Jin Han;Lee, Hak Sung;Choi, Jae Won;Ma, Sang Hyuk;Lee, Jaywon
Pediatric Infection and Vaccine
/
v.24
no.1
/
pp.23-30
/
2017
Purpose: The objective of this study was to compare the clinical characteristics of influenza A and B infections and analyze the effect of oseltamivir in hospitalized children. Methods: We investigated children under the age of 15, who were diagnosed with influenza A/H1N1, A/H3N2, or B from January to April 2014. The subjects were admitted to the Changwon Fatima Hospital and diagnosed using a rapid antigen test from nasopharyngeal swabs. The medical records of the patients were retrospectively reviewed. Results: A total of 302 pediatric patients with influenza were enrolled. Influenza B infection was the most common type (n=187, 61.9%), followed by A/H3N2 (n=100, 33.1%) and A/H1N1 (n=15, 5.0%). Compared to patients diagnosed with influenza A, patients diagnosed with influenza B were older (P=0.005), and the duration of fever was significantly longer (P=0.001). A total of 161 patients (53.3%) had been vaccinated against influenza during the season, before admission. Among the patients infected with A/H3N2 and B, the duration of fever was shorter in oseltamivir recipients compared to oseltamivir non-recipients (P=0.026 and P=0.004, respectively). Conclusions: There were significant differences between influenza A and B groups in terms of age, demographics, and clinical course. Although the effectiveness of oseltamivir on influenza differs according to the type of influenza, our data provides evidence that oseltamivir is beneficial for both A and B infections.
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