In Iran, 20 people got anthrax infections from taking kombucha tea.
Seven people have been confirmed with anthrax infections on their skin, which is less serious.
No new confirmed cases of anthrax infection in the Washington area were announced today.
Antibiotics are used to treat all types of anthrax infection.
It is the most common type of anthrax infection.
Gastrointestinal anthrax infection can spread to the bloodstream, and may result in death.
Health officials said the presence of antibodies in the blood did not necessarily mean an anthrax infection.
Lawmakers saw a much greater need for the legislation when anthrax infections caused panic a few weeks later.
If you are showing symptoms of anthrax infection, call your health-care provider right away.
"Let me point out that they exhibit no symptoms of anthrax infection," he said.