Alpha Diagnostic International (ADI) is a biotech company engaged in the development and distribution of diagnostic reagents and test kits for animal and human diseases. It provides a range of vaccines for diphtheria, tetanus, pertussis, hepatitis, measles, polio, meningitis, tuberculosis, and more. In addition, the company manufactures and distributes tests for malaria, cholera, anthrax, Ebola, encephalitis, influenza, Congo, and papilloma (HPV) viruses.