My current research is focused on disease burden/vaccine impact modeling, determining pneumonia etiology, and acceleration of vaccine introduction. I have a continued interest in issues related to infections in pregnancy and maternal and child mortality.

Recent projects include:

-Pneumococcal Global Serotype Project (GSP)

-WHO Hib/Spn Global Burden of Disease Project (GBD)

-Adult Global Estimation of Disease burden and serotype Distribution for serious pneumococcal and meningococcal disease (AGEDD)

-Pneumonia Etiology Research for Child Health (PERCH)

-WHO Child Health Epidemiology Reference Group (CHERG) cause of death estimation

vaccines, infectious disease epidemiology, reproductive and perinatal epidemiology, surveillance, GIS, immunization programs, maternal mortality, child mortality, international health

Edward T. Conroy State Scholarship, 2006-2007.

The Dean’s Alumni Advisory Council Scholarship, 2006.

National Institute of Allergy and Infectious Diseases/Johns Hopkins Pre-doctoral Fellowship, 2004-2007.

Silveira, MF, Ghanem, KG, Erbelding, EJ, Burke, A, Johnson, HL, Singh, R, Zenilman JM (2009). Risk factors for Chlamydia trachomatis infection during pregnancy and the risk of preterm birth – a case-control study. [International Journal of STD & AIDS]

Stanton, C., Knight, R., Ariawan, I., Gbangbade, S., Getachew, A., Jarquin, D., Marin, F., Mfinanga, S., Vellecillo, J., Johnson, HL, Sintasath, D., Armbruster, D. (2007). Lost opportunities in the prevention of postpartum hemorrhage: Use of active management of the third stage of labor in seven developing countries. [Bull World Health Organ 2009, 87: 207-215]

Johnson, HL, Erbelding, EJ, Zenilman, JM, Ghanem KG (2007). Sexually Transmitted Diseases and Risk Behaviors among Pregnant Women Attending Inner City Public STD clinics. Sexually Transmitted Diseases 2007, 34(12): 991-994.

Johnson, HL, Erbelding, EJ, Ghanem, KG (2007). Sexually Transmitted Infections during Pregnancy. Current Infectious Disease Reports 2007, 9: 125-133.