Actually every kind you get works. Some of it works better then others but they all work.
For people with a weakened (or in the case of babies not yet fully formed) immune system, sugar packs also work.
38 posted on 09/21/2022 1:41:38 PM PDT by Harmless Teddy Bear
(The nation of france was named after a hedgehog... The hedgehog's name was Kevin... Don't ask)