López-Cervantes, Malaquias, Aida Venado, Andrés Moreno, Reyna L. Pacheco-Domínguez, and Guadalupe Ortega-Pierres. 2009. “On the Spread of the Novel Influenza A (H1N1) Virus in Mexico”. The Journal of Infection in Developing Countries 3 (05):327-30. https://doi.org/10.3855/jidc.238.