Thanks for the CDC link, very helpful.
here is a link to info about the Lifestraw. Very light and handles bacteria and protozoa. Not good for viruses, though and wouldn't be very useful for cleaning pots of water for cooking. Maybe use it to sip water from a bottle that you have treated with alta mira for double protection? Or just decide that you're not worried about virus.

http://www.buylifestraw.com/en/products/lifestraw-personal