Journal
VACCINE
Volume 33, Issue 10, Pages 1250-1255Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.vaccine.2015.01.051
Keywords
Severe fever with thrombocytopenia syndrome; Immunological response; Cohort study; Humoral immunity
Categories
Funding
- China Mega-Project for Infectious Diseases [2013ZX10004-202]
- Natural Science Foundation of China [81222037, 81473023, 81290344]
- Youth Talent Support Program by School of Public Health, Peking University
Ask authors/readers for more resources
Background: The immunological responses of patients with severe fever with thrombocytopenia syndrome (SFTS) remain largely unknown. We aim to study the magnitude and sustainability of host immune responses and their correlation with clinical, virological and hematological parameters. Methods: A longitudinal cohort study was performed in a SETS reference hospital. The sequential immunological evaluation was determined for SFTSV infected patients, including anti-SFTSV IgM, IgG antibodies and the lymphocyte subsets. Results: Altogether 298 laboratory-confirmed SFTS cases were analyzed, from whom 55 patients were followed after convalescence. SFTSV specific IgM antibody could be detected at medium of 9 days, surged to peak levels by 4 weeks, and remained persistent until 6 months after disease onset. SFTSV specific IgG antibody could be detected at medium of 6 weeks; surged to peak levels by 6 months, and remained positive in most of the patients even at 3 years after infection. SFTS patients experienced obvious T cell, B cell and NK cells loss during the first week of infection, which was rapidly restored to normal levels. A significantly lower level of humoral immunity was identified concurrently from severe disease, especially in acute phase of the infection. These abnormalities can be used as a potential indicator in the prediction of an adverse clinical outcome. Conclusions: Information gained from this study have clinical significance in enhancing our understanding of SFTS immunological characteristics and the disease pathogenesis. (C) 2015 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available