Dr Gustavo Bracho, an immunologist with the Carlos J. Finlay Institute, a world renowned center for vaccine research and production in Havana, Cuba used HP for 2.3 million people in 2007 and 2008. Dr. Bracho is Advisor to the President and General Director of Finlay Institute, and head of the Homeopathy and Biotherapic Projects at the Institute. He is an experienced researcher in molecular and cellular biology, and has headed the Adjuvant Group within the Immunology Department of Finlay.
The PubMed study states:
CONCLUSIONS: The homeoprophylactic approach was associated with a large reduction of disease incidence and control of the epidemic. The results suggest the use of HP as a feasible tool for epidemic control, further research is warranted.[i]
[i] PubMed 2014. Retrieved from: http://www.ncbi.nlm.nih.gov/pubmed/20674839 Bracho G1, Varela E, Fernández R, Ordaz B, Marzoa N, Menéndez J, García L, Gilling E, Leyva R, Rufín R, de la Torre R, Solis RL, Batista N, Borrero R, Campa C. Large-scale application of highly-diluted bacteria for Leptospirosis epidemic control. Homeopathy. 2010 Jul;99(3):156-66. doi: 10.1016/j.homp.2010.05.009.