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Center for Human Nutrition


Joanne Katz

Associate Chair, Director of Academic Programs
Academic Degrees
BSc, University of Cape Town, 1978; MS, Princeton University, 1982; ScD, Johns Hopkins University, 1993
Departmental Affiliation
International Health
Global Disease Epidemiology and Control
Joint Departmental Affiliations
Biostatistics, Epidemiology, Ophthalmology
Departmental Address
Room W5009
615 N. Wolfe Street
Phone: 410-955-7016
Fax: 410-955-2029
Research and Professional Experience


My research aims to reduce mortality and morbidity in under-served populations in the United States and abroad. The underlying discipline bases for this research are epidemiology, community randomized trials and biostatistics. Areas of focus include (1) macro and micronutrient deficiencies, (2) neonatal and maternal health, (3) interaction between nutrition and infection, (4) ophthalmic epidemiology and blindness prevention.

Current projects include

1. A randomized trial to assess the impact of newborn massage with mustard seed versus sunflower seed oil on neonatal morbidity and mortality in rural Nepal.

2. A randomized trial to assess the impact of maternal influenza vaccination on respiratory infections in mothers and infants in Sarlahi, Nepal.

3. An observational study to determine if auxiliary nurse midwives can be trained to evaluate non-cephalic presentation, multiple gestation and placenta previa accurately in the 3rd trimester using portable ultrasound in rural Nepal.           

4. Pertussis incidence, risk factors and maternal antibody transfer among young infants in rural Nepal.

5. Step wedge trial to assess the impact of improving cook stoves to reduce indoor air pollution and respiratory infections in young children in rural Nepal.





epidemiology, biostatistics, community trials, vitamin A, iron, zinc, micronutrients, neonatal and maternal health, adolescent pregnancy, reproductive health, respiratory infections, ophthalmology, blindness and visual impairment, Nepal, Bangladesh.

Honors and Awards

2016 Maryland Women's Hall of Fame

2014 Children's Prize

2011  Johns Hopkins Alumni Knowledge for the World Award

2011  Global Health Excellence in Advising Award, Johns Hopkins University

2011  Golden Apple teaching Award, Johns Hopkins Bloomberg School of Public Health

Advising, Mentoring and Teaching Recognition Award, Johns Hopkins Bloomberg School of Public Health, 2002, 2005, 2011

2009 Association for Research in Vision and Ophthalmology Fellow

2009 American Academy of Ophthalmology Recognition of Outstanding Service to the Profession of Ophthalmology

Fellow, American College of Epidemiology, 1994

Delta Omega, 1993

Selected Publications

1.           Patel SA, Murray-Kolb LE, LeClerq SC, Khatry SK, Tielsch JM, Katz J, Christian P. Social, biological, and environmental factors influencing cognitive and motor functioning in school aged children in rural Nepal. Ped Perinatal Epidemiol (accepted for publication).

 2.           Katz J. Tracking nutritional changes in an urbanizing world beyond the 2015 MDGs. Lancet Global Health (invited commentary) (accepted for publication).

 3.               Blencowe H, Lee ACC, Cousens S, Bahalim A, Narwal R, Zhong N, Chou D, Say L, Modi N, Katz J, Vos T, Marlow N, Lawn JE. Preterm birth associated neurodevelopmental impairment estimates at regional and global level for 2010. Pediatric Research (accepted for publication).

4.         Scrafford CG, Mullany LC, Katz J, Khatry SK, LeCLerq SC, Darmstadt GL, Tielsch JM. Risk Factors for Neonatal Jaundice among Newborns in Southern Nepal. Trop Med Int Health (accepted for publication).

5.          Surkan PJ, Siegel EH, Patel S, Katz J, Khatry SK, Stoltzfus RJ, LeClerq SC, Tielsch JM. Zinc and iron supplementation on motor and language milestone scores of infants and toddlers. Nutrition (accepted for publication). 

6.          Kozuki N, Lee ACC, Silveria MF, Sania A, Vogel JP, Adair L, Barros F, Caulfield LE, Christian P, Fawzi W, Humphrey J, Huybregts L, Mongkolchati A, Ntozini R, Osrin D, Roberfroid D, Tielsch J, Vaidya A, Black RE, Katz J.  The associations of parity and maternal age with small-for-gestational-age, preterm, and neonatal and infant mortality:  a meta-analysis.  BMC Public Health 2013, 13(Suppl3):S2.

7.          Kozuki N, Lee ACC, Silveira MF, Victora CG, Adair L, Ntozini R, Humphrey J, Ntozini R, Black RE, Katz J.  The associations of birth intervals with small-for-gestational-age, preterm, and neonatal and infant mortality: a meta-analysis.  BMC Public Health 2013, 13(Suppl3):S3.

8.          Lee ACC, Katz J, Blencowe H, Cousens S, Kozuki N, Vogel JP, Adair L, Baqui A, Bhutta Z, Caulfield LE, Christian P, Clarke A, Ezzati M, Fawzi W, Gonzalez R, Huybregts L, Kariuki S, Kolsteren P, Lusingu J, Marchant T, Merialdi M, Mongkolchati A, Mullany LC, Ndirangu J, Newell ML, Nien JK, Osrin D, Roberfroid D, Rosen HE, Sania A, Silveira MF, Tielsch JM, Vaidya A, Willey BA, Lawn JE, Black RE and the CHERG SGA-Preterm Working Group. Born Too Small:  National and Regional Estimates of Term and Preterm Small-for-Gestational-Age in 138 Low-Middle Income Countries in 2010. Lancet Global Health (accepted for publication).

9.           Katz J, Lee ACC, Kozuki N, Lawn JE, Cousens S, Blencowe H, Ezzati M, Bhutta ZA, Marchant T, Willey BA, Adair L, Barros F, Baqui AH, Christian P, Fawzi W, Gonzalez R, Humphrey J, Huybregts L, Kolsteren P, Mongkolchati A, Mullany LC, Ndyomugyenyi R, Nien JK,  Osrin D, Roberfroid D, Sania A, Schmiegelow C, Silveira MF, Tielsch J, Vaidya A, Velaphi SC, Victora CG, Watson-Jones D, Black RE and the CHERG Small-for-Gestational-Age-Preterm Birth Working Group. Mortality risk in preterm and small-for-gestational-age infants in low-income and middle-income countries:  a pooled country analysis.  Lancet 2013;EPub;  PMID: 

10.            Fischer Walker CL, Perin J, Liu JL, Katz J, Tielsch JM, Black RE. Does comorbidity increase the risk of mortality among children under 3 years of age? BMJ Open. 2013 Aug 21;3(8):e003457. doi: 10.1136/bmjopen-2013-003457. PMID:23965935.

11.            Rosenstock S, Katz J, Mullany LC, Khatry SK, LeClerq SC, Darmstadt GL, Tielsch JM:  Sex differences in neonatal mortality in Sarlahi, Nepal:  the role of biology and environment.  J Epidemiol Community Health. 2013 Jul 19. doi: 10.1136/jech-2013-202646. [Epub ahead of print] PMID:23873992.

12.            Danaei G, Singh GM, Paciorek CJ, Lin JK, Cowan MJ, Finucane MM, Farzadfar F, Stevens GA, Riley LM, Lu Y, Rao M, Ezzati M on behalf of the Global Burden of Metabolic Risk Factors of Chronic Diseases Collaborating Group. The global cardiovascular risk transition: associations of four metabolic risk factors with national income, urbanization, and western diet in 1980 and 2008.  Circulation. 2013 Apr 9;127(14):1493-502, 1502e1-8. doi: 10.1161/CIRCULATIONAHA.113.001470. Epub 2013 Mar 12. PMID:23481623.

13.            McDonald CM, Olofin I, Flaxman S, Fawzi WW, Spiegelman D, Caulfield LE, Black RE, Ezzati M, Danaei G for the Nutrition Impact Model Study. The effect of multiple anthropometric deficits on child mortality: meta-analysis of individual data in 10 prospective studies from developing countries.  Am J Clin Nutr 2013;97:896-901.  PMID: 23426036

14.            Black RE, Victora CG, Walker SP,  Bhutta ZA, Christian P, de Onis M,  Ezzati M,  Grantham-McGregor S, Katz J,  Martorell R,  Uauy R  and the Maternal and Child Nutrition Study Group. Maternal and child undernutrition and overweight in low-income and middle-income countries. Lancet 2013;EPub;  PMID: 23746772.

15.            Olofin I, McDonald CM, Flaxman S, Ezzati M, Black RE, Fawzi WW, Caulfield LE, Danaei G, for the Nutrition Impact Model Study. Associations of suboptimal growth with all-cause and cause-specific mortality in children under five years: a pooled analysis of ten prospective studies.  PLoS One 2013;8(5):e64636.  PMID:  23734210.

16.            Fischer Walker CL, Perin J, Katz J, Tielsch JM, Black RE.  Diarrhea as a Risk Factor for Acute Lower Respiratory Tract Infections Among Young Children in Low Income Settings. Walker CL, Perin J, Katz J, Tielsch JM, Black RE. J Glob Health. 2013 Jun;3(1):10402. doi: 10.7189/jogh.03.010402. PMID: 23826506.

17.            Friedman DS, Holbrook JT, Ansari H, Alexander J, Burke A, Reed SB, Katz J, Thorne JE, Lightman SL, Kempen JH for the MUST Research Group. Risk of elevated intraocular pressure and glaucoma in patients with Uveitis: results of the Multicenter Uveitis Steroid Treatment Trial. Ophthalmology 2013;  PMID:  23601801

18.            Mullany LC, Khatry SK, Katz J, Stanton CK, Lee AC, Darmstadt GL, LeClerq SC, Tielsch JM. Injections during labor and intrapartum-related hypoxic injury and mortality in rural southern Nepal. Int J Gynecol Obstet (2013),  PMID:  23523332

19.            Christian P, Klemm R, Shamim AA, Ali H, Rashid M, Shaikh S, Wu L, Mehra S, Labrique A, Katz J, West KP Jr. Effects of vitamin A and β-carotene supplementation on birth size and length of gestation in rural Bangladesh: a cluster-randomized trial.  Am J Clin Nutr. 2013 Jan;97(1):188-94. doi: 10.3945/ajcn.112.042275. PMID:  23151532