There are some 20,000 to 100,000 cases of Anthrax yearly. The areas of high prevelance include the Near and Middle East, Africa and parts of South America and Europe.
Given the state of the food supply (sanitation) in India, these 2 cases are not surprising at all.
For example, over the last 20 years, in the US, human anthrax cases only numbered 51, with only 11 in the last decade....until September 11th.