Del Cielo is a small public health company with a big ambition: to reduce vector-borne diseases in poor communities around the world.

By some estimates, over a billion cases of such diseases affected those communities in 2009. Malaria, dengue, leishmaniasis, onchocerciasis, yellow fever, lymphatic filariasis, Chikungunya, trypanosomiasis, West Nile virus. Annually, these and other illnesses spread by biting arthropods could cause more than 1.5 million deaths, 10 million disabilities, and $30 billion in lost income.




The Team


Samuel Darling – Director

Agriculturalist, inventor, and owner/operator of Del Cielo Company, Sam has more than 40 years experience growing botanicals in tropical environments. Specializing at first in medicinal plants from Southeast Asia, Del Cielo Company now supplies organically grown lemongrass to the herb tea industry in North America. Revenues from this operation have funded the Del Cielo Project.


Sam Darling is co-author of the following Publications:

Moore S J, Darling ST, Sihuincha M, Padilla N, Devine GJ. A low-cost repellent for malaria vectors in the Americas; results of two field trials in Guatemala and Peru. Mal J 2007; 6: 101; doi: 10.1186/1475-2875-6-101

Kiszewski AE, Darling ST. Estimating a mosquito repellent’s potential to reduce malaria in communities. J Vector Borne Dis, Dec 2010



Dr. Anthony Kiszewski – Entomologist

Public Health Entomology, Bentley University, Massachusetts 


Since 2006, Dr. Tony Kiszewski has donated hundreds of hours to the Del Cielo Project. Principal entomologist for this privately funded public health initiative, Tony has conducted numerous cage tests of the repellent and helped with field trials in Peru, Ghana, and Cambodia. In collaboration with Darling, he also helped develop the Estimator, a static probability model which estimates the mean probability of avoiding malaria infections in populations protected by a repellent (Kiszewski AE, Darling ST. Estimating a mosquito repellent’s potential to reduce malaria in communities. J Vector Borne Dis, Dec 2010).
Anthony has a Doctor of Science degree from Harvard University’s School of Public Health. There, under the guidance of A. Spielman he specialized in vector-borne diseases and parasitology.

Dr. Kiszewski currently works as an assistant professor in Public Health Entomology at Bentley University, Waltham, MA.