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Seroepidemiology of astrovirus MLB1
Lori R Holtz1, Irma K Bauer1, Hongbing Jiang1
1Washington University School of Medicine, St. Louis, Missouri, USA.
Clinical and Vaccine Immunology : CVI
|May 3, 2014
Abstract:
To determine the seroprevalence of astrovirus MLB1 (MLB1), an indirect enzyme-linked immunosorbent assay (ELISA) was established. MLB1 seropositivity was high in children <6 months old, decreased to a nadir at 12 to 23 months old, and increased to 100% by adulthood. MLB1 infection is common, and primary exposure occurs in childhood.
Insights
Astrovirus MLB1 (MLB1) infection is common, with primary exposure occurring in childhood. Seroprevalence is high in infants, dips in toddlers, and reaches 100% in adults, indicating widespread childhood exposure.
Area of Science:
- Virology
- Immunology
- Pediatrics
Background:
- Astrovirus MLB1 (MLB1) is a known human pathogen.
- Understanding the epidemiology of MLB1 infection is crucial for public health.
- Previous studies have not fully elucidated the seroprevalence patterns of MLB1 in different age groups.
Purpose of the Study:
- To establish an indirect enzyme-linked immunosorbent assay (ELISA) for detecting MLB1 antibodies.
- To determine the seroprevalence of astrovirus MLB1 in a diverse population.
- To characterize the age-specific seroprevalence of MLB1 infection.
Main Methods:
- An indirect enzyme-linked immunosorbent assay (ELISA) was developed and validated.
- Sera from individuals across various age groups were tested for MLB1 antibodies.
- Statistical analysis was performed to determine seroprevalence rates and trends.
Main Results:
- The indirect ELISA effectively detected MLB1-specific antibodies.
- MLB1 seropositivity was high in children younger than 6 months.
- Seroprevalence decreased to a nadir between 12 and 23 months of age.
- Seroprevalence increased steadily, reaching 100% in the adult population.
Conclusions:
- Astrovirus MLB1 infection is highly prevalent, with initial exposure occurring early in life.
- The age-specific seroprevalence pattern suggests primary MLB1 infection is common during infancy and early childhood.
- The established ELISA is a valuable tool for future epidemiological studies of MLB1.
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