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Alfred Sommer
Researcher at Johns Hopkins University
Publications - 366
Citations - 32936
Alfred Sommer is an academic researcher from Johns Hopkins University. The author has contributed to research in topics: Xerophthalmia & Vitamin A deficiency. The author has an hindex of 86, co-authored 364 publications receiving 31556 citations. Previous affiliations of Alfred Sommer include Centers for Disease Control and Prevention & Johns Hopkins University School of Medicine.
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Journal ArticleDOI
Supplementation with vitamin A early in life and subsequent risk of asthma
William Checkley,Keith P. West,R. A. Wise,L. Wu,Steven C. LeClerq,Subarna K. Khatry,Jonathan L. Katz,Parul Christian,James M. Tielsch,Alfred Sommer +9 more
TL;DR: Vitamin A supplementation early in life was not associated with a decreased risk of asthma in an area with chronic vitamin A deficiency, and being born to mothers who received vitamin A, &bgr;-carotene or placebo before, during and after pregnancy was found to be normal.
Journal ArticleDOI
Prevalence and severity of xerophthalmia in southern malawi
James M. Tielsch,Keith P. West,Joanne Katz,Moses C. Chirambo,Larry Schwab,Gordon J. Johnson,Teferra Tizazu,J. Swartwood,Alfred Sommer +8 more
TL;DR: Given recent evidence from Asia linking even subclinical vitamin A deficiency to increased risk of mortality and morbidity, this disease is not only a leading cause of blindness in this area, but may have an important impact on child survival as well.
Journal ArticleDOI
Cataracts as an epidemiologic problem.
TL;DR: There is little basis for the common belief that senile cataracts are more prevalent, or mature more rapidly, in diabetics, and carefully conducted case control and long-term studies are needed to assess the importance of each of these factors.
Journal Article
Tolerance of young infants to a single, large dose of vitamin A: a randomized community trial in Nepal.
Keith P. West,Subarna K. Khatry,Steven C. LeClerq,Ramesh K. Adhikari,L. See,Jonathan L. Katz,Sudeep Shrestha,Elizabeth K. Pradhan,Ram Prasad Pokhrel,Alfred Sommer +9 more
TL;DR: The controlled, periodic distribution of a single 15,000 RE dose of vitamin A confers no apparent acute risk to young infants; a 30,000RE dose is associated with a minimum risk of transient, acute side-effects.