• Title/Summary/Keyword: primary infection

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Current progress on development of respiratory syncytial virus vaccine

  • Chang, Jun
    • BMB Reports
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    • v.44 no.4
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    • pp.232-237
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    • 2011
  • Human respiratory syncytial virus (HRSV) is a major cause of upper and lower respiratory tract illness in infants and young children worldwide. Despite its importance as a respiratory pathogen, there is currently no licensed vaccine for prophylaxis of HRSV infection. There are several hurdles complicating the development of a RSV vaccine: 1) incomplete immunity to natural RSV infection leading to frequent re-infection, 2) immature immune system and maternal antibodies of newborn infants who are the primary subject population, and 3) imbalanced Th2-biased immune responses to certain vaccine candidates leading to exacerbated pulmonary disease. After the failure of an initial trial featuring formalin-inactivated virus as a RSV vaccine, more careful and deliberate efforts have been made towards the development of safe and effective RSV vaccines without vaccine-enhanced disease. A wide array of RSV vaccine strategies is being developed, including live-attenuated viruses, protein subunit-based, and vector-based candidates. Though licensed vaccines remain to be developed, our great efforts will lead us to reach the goal of attaining safe and effective RSV vaccines in the near future.

Acute Epstein-Barr Virus Hepatitis in a 32 Month Old Female Manifesting as Henoch-Sch$\ddot{o}$nlein Purpura

  • Kim, Hee Jin;Jung, Su Jin;Lee, Jun Ho
    • Childhood Kidney Diseases
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    • v.19 no.1
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    • pp.39-42
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    • 2015
  • Henoch-Sch$\ddot{o}$nlein purpura can result from exposure to an antigen after infection with several types of organisms. However, Henoch-Sch$\ddot{o}$nlein purpura caused by a primary Epstein-Barr virus infection has been rarely reported. Here, we report the case of a 32-month-old female patient who presented with Henoch-Sch$\ddot{o}$nlein purpura. Based on abnormal liver function test results and positive results for Epstein-Barr virus infection markers, a diagnosis of Epstein-Barr virus hepatitis manifesting as Henoch-Sch$\ddot{o}$nlein purpura was made. Treatment with methyl-prednisolone and hydration improved the symptoms, and a switch to oral steroids was effective in completely alleviating the purpura. No recurrence was noted and no liver function abnormalities were detected during the follow up period.

Studies on Gill Infection of Rockfishes, Sebastes spp. Caused by Monogenetic Trematodes

  • Chun, Kae-Shik
    • Korean Journal of Environmental Biology
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    • v.21 no.1
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    • pp.42-44
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    • 2003
  • The study of the gill infection of rockfishes, Sebastes spp. by monogenetic trematodes conducted during March 2002 to June 2002 are presented. Three species are reported krom examination of 23 rockfishes collected from Oregon Coast Aquarium and Newport fish market, Oregon. Ten rockishes belonging to three species showed an infection rate of 43.5%. A total of 135 monogenetic trematodes was found in the gills of Sebastes spp. Of 135 worms recovered from the gills of 4 harbor rockfishes, two were Sebastes maliger, 14 S. melanops, 110 S. pinniger, and 9 S. crameri. Prevalence and intensity in Microcotyle seba.fis were 11.9% and 4.0, and for Trochopus trituba they were 81.5% and 55.0, and for Trochopus australis, they were 6.7% and 2.3, respectively. These worms are mainly found firmly attached to the primary lamellae of the gills of the rockfishes.

Diverse clinical manifestations caused by varicella-zoster virus reactivation (수두-대상포진 바이러스의 재활성에 의해 유발되는 다양한 임상질환)

  • Park, Hosun
    • Journal of Yeungnam Medical Science
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    • v.33 no.1
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    • pp.1-7
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    • 2016
  • The two distinctive clinical features of varicella-zoster virus (VZV) are varicella (chickenpox) by primary infection and zoster (singles) by the reactivation of latent infection. In addition to the two typical clinical symptoms mentioned above, diverse clinical manifestations have been reported as a result of VZV reactivation, including chronic radicular pain without rash, visual loss, facial palsy, dysphagia, sore throat, odynophagia, otalgia, hearing loss, dizziness, headache, hemiplegia, etc. Most of these symptoms are derived from neuropathy and vasculopathy of affected nerves and arteries. Diagnosis of VZV disease can be difficult if there is no appearance of a skin rash during development of atypical symptoms. In addition to natural infection, vaccination and anti-viral agent treatment have influenced the changes of epidemics and clinical presentations of varicella and zoster. In this article, diverse clinical manifestations caused by VZV reactivation, particular without skin rash, are reviewed.

Staphylococcus Species in the Dental and Medical Environment

  • Han, Seung-Ho;Kim, Shin-Moo;Jeong, Seung-Il;Kim, Kang-Ju
    • International Journal of Oral Biology
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    • v.38 no.1
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    • pp.1-4
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    • 2013
  • Staphylococcus species are one of prevalent pathogens found in hospitals. Microbes that are a primary cause of nosocomial infection were isolated from a dental and medical environment it may assist the reader to explain what this is and how it differs from the 'dental health care providers and ward health care providers'. To investigate the distribution of staphylococcus species in this environment, we used vitek II to measure drug sensitivity, and further performed biochemical testing. The isolation rate of staphylococcus species from the dental and medical environment was 100% but from dental health care providers and ward health care providers were 44.4% and 33.3%, respectively. In the analyses, staphylococcus species showed resistance to diffusion of cefoxitin and oxacillin discs. These staphylococci may be sufficiently positive for the mecA gene. Our results suggest that staphylococci might be an important cause of nosocomial infection in the dental clinic.

Pasteurellosis in Rabbits

  • Al-Haddawi, M.H.
    • Proceedings of the Korean Society of Veterinary Pathology Conference
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    • 2000.09a
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    • pp.12-16
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    • 2000
  • In domestic rabbits, pasteurellosis is a primary respiratory disease entity caused by Pasteurella multocida. Respiratory pasteurellsos in rabbits is highly contagious due to dissemination of the organism in the nasal discharge (Benirschke, et al., 1978). The disease reflects a varied and complex host-parasite relationship. Acute infection with high mortality occurs sporadically especially in stressed rabbits less than 10 weeks old, in the form either an enzootic pneumonia, infection of the upper respiratory tract or septicemia. In addition to respiratory form, infection with P. multocida results in a variety of disease processes in rabbits including rhinitis, otitis media, otitis interna, abscesses, metritis, orchitis and meningoencephalaitis (Manning et al., 1989). The deleterious effects of pasteurellosis are common and pose serious problems for rabbit breeders and researchers (Flatt, 1974). (omitted)

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Necrotizing fasciitis of the masticator space with osteomyelitis of the mandible in an edentulous patient

  • Shin, Jongweon;Park, Song I;Cho, Jin Tae;Jung, Sung-No;Byeon, Junhee;Seo, Bommie Florence
    • Archives of Craniofacial Surgery
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    • v.20 no.4
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    • pp.270-273
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    • 2019
  • Necrotizing fasciitis (NF) is a rapidly progressive necrosis of the subcutaneous tissue and fascia, caused by bacterial infection. Usually presenting in the extremities, trunk, or perineum, it is uncommon in the craniofacial or cervical area. Cervicofacial NF is a potentially fatal infection, which should be managed with early detection and intervention. Most cases have a primary odontogenic source of infection, especially when the masticator space is involved. We report a case of masticator space NF that developed without odontogenic origin in a 78-year old female who was treated with prompt surgical drainage and intravenous antibiotics.

Lower Leg Abscess in Klebsiella pneumoniae Invasive Syndrome Caused by Hypervirulent Klebsiella pneumoniae: A Case Report (고병원 폐렴막대균 침습 증후군에 동반된 하지 농양: 증례 보고)

  • Kim, Dong Seok;Kim, Dae-Yoo
    • Journal of Korean Foot and Ankle Society
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    • v.26 no.2
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    • pp.107-110
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    • 2022
  • Klebsiella pneumoniae is known to cause an invasive syndrome characterized by primary liver abscess associated with metastatic infection. The characteristics of the metastatic infection involving the musculoskeletal system in this invasive syndrome are not well understood. The authors present a case report of a patient who developed abscesses of the lower extremities along with abscesses of multiple organs, such as the liver and eye, caused by K. pneumoniae. The patient was diagnosed early, and the infection was successfully controlled after several surgical treatments.

Current scenario and future applicability of antivirals against herpes zoster

  • Sang Hun Kim
    • The Korean Journal of Pain
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    • v.36 no.1
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    • pp.4-10
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    • 2023
  • Herpes zoster (HZ) is a common disease in the aging population and immunocompromised individuals, with a lifetime risk of 20%-30% that increases with age. HZ is caused by reactivation of the varicella-zoster virus (VZV), which remains latent in the spinal dorsal root ganglia and cranial sensory ganglia after resolution of the primary VZV infection. The main focus of HZ management is rapid recovery from VZV infection as well as the reduction and prevention of zoster-associated pain (ZAP) and postherpetic neuralgia (PHN). The use of antivirals against VZV is essential in the treatment of HZ. However, limited antivirals are only licensed clinically for the treatment of HZ, including acyclovir, valacyclovir, famciclovir, brivudine, and amenamevir. Fortunately, some new antivirals against different types of Herpesviridae have been investigated and suggested as novel drugs against VZV. Therefore, this review focuses on discussing the difference in efficacy and safety in the currently licensed antivirals for the treatment of HZ, the applicability of future novel antivirals against VZV, and the preventive or therapeutic effects of these antivirals on ZAP or PHN.

Molecular epidemiology of Toxoplasma gondii in cattle in Korea

  • Kyoo-Tae Kim;Min-Goo Seo
    • Parasites, Hosts and Diseases
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    • v.61 no.2
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    • pp.210-215
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    • 2023
  • Toxoplasmosis is a major public health concern, with raw or undercooked meat being the primary source of human infection. Knowledge regarding the molecular epidemiology of Toxoplasma gondii in cattle destined for human consumption in Korea is lacking. The present study aimed to genetically characterize the infectious strains of T. gondii. Overall, 455 cattle blood samples from 84 farms in the Gyeongnam-do (Province) were randomly collected in 2017. Nested PCR analysis revealed that only 3 (0.7%) samples were infected with T. gondii. The B1 gene sequence of T. gondii was observed to be similar (97.3-99.6%) to that of other T. gondii isolates. This is the first study to perform the molecular detection of T. gondii in cattle in Korea. Although the prevalence of infection was low, our findings suggest that cattle present a potential public health issue. It may be crucial to recognize the importance of T. gondii infection in cattle meat.