There is a local tofu recall from a South San Francisco company called Quong Hop. The tofu may be contaminated with listeria. People who have compromised immune systems may not want to buy or eat products from this company until the issue is resolved.
Here's a link:
I have never seen these products in my store, but, maybe you have. If you have, contact the company with the phone number in the link or take the tofu back to the store you bought it from and ask for a refund.