Alfred (Al) Sommer is a prominent American ophthalmologist and epidemiologist at the Johns Hopkins Bloomberg School of Public Health. His research on vitamin A in the 1970s and 1980s revealed that dosing severely vitamin A deficient children with an inexpensive, large dose vitamin A capsule twice a year reduces child mortality by as much as 34 percent. The World Bank and, recently, the Copenhagen Consensus list vitamin A supplementation as one of the most cost-effective health interventions in the world.
Sommer was born in 1942 in New York City and graduated from Union College in Schenectady, New York in 1963. Sommer has an MD from Harvard Medical School (1967) and an MHS from the Johns Hopkins School of Hygiene and Public Health (1973). He is professor of Epidemiology and International Health at the Bloomberg School and Professor of Ophthalmology at the Johns Hopkins School of Medicine. He was dean of the Johns Hopkins Bloomberg School of Public Health from 1990-2005, where he was instrumental in raising funding for an unprecedented expansion of the School's research and size.
Because of Sommer's vitamin A research, he has won the Albert Lasker Award for Clinical Medical Research in 1997 and the Danone International Prize for Nutrition in 2001, among other honors. The 2005 PBS documentary Rx for Survival featured Sommer as a "global health champion."
His current research involves the cause, magnitude, consequences, and control of vitamin A deficiency.
In 2004, the Johns Hopkins Bloomberg School of Public Health established a $22 million scholarship program in honor of Dr. Sommer called the Sommer Scholars.  The programs aims to "recruit the next generation of public health leaders to devise new, effective interventions to improve global health."
- Sommer A, Tarwotjo I, Djunaedi E, West KP Jr, Loeden AA, Tilden R, Mele L. Impact of vitamin A supplementation on childhood mortality. A randomised controlled community trial. Lancet 1986; 24: 1169-1173
- World Development Report 1993. World Bank, 1993.
- Copenhagen Consensus 2008. http://www.copenhagenconsensus.com/Default.aspx?ID=953 Accessed on 2009-03-19.
- Alfred Sommer Biography, Johns Hopkins Bloomberg School of Public Health. http://faculty.jhsph.edu/?F=Alfred&L=Sommer
- Albert Lasker Clinical Medical Research Award. http://www.laskerfoundation.org/awards/1997clinical.htm Accessed on 2009-03-19
- Danone Institute Prize for Nutrition. http://www.danoneinstitute.org/danone_institute_prize_for_nutrition/awardees/index.php Accessed on 2009-03-19
- Rx for Survival: Global Health Champions. http://www.pbs.org/wgbh/rxforsurvival/series/champions/alfred_sommer.html Accessed on 2009-03-19.
- The Lasker Foundation - About the Foundation. http://www.laskerfoundation.org/about/board.htm Accessed on 2009-03-19.
- Alfred Sommer M.H.S. Profile at Forbes. http://people.forbes.com/profile/alfred-sommer-m-h-s-/11048 Accessed on 2009-03-19.
- New Scholarship to Recruit Public Health Leaders of The Future. http://www.jhsph.edu/publichealthnews/press_releases/PR_2004/Sommer_Scholars.html