He's had malaria, bilharzia (a tropical disease caused by parasitic worms picked up from snails), leishmaniasis (a parasitic disease spread by the bite of a sandfly), roundworm, botflies and ringworm.
Some things, however, are virtually unrecognizable once they've been frozen and thawed. In other words, you can freeze whatever you want, and use these foods frozen, but some foods don't hold up after being defrosted. Here are 11 things you should not keep in the freezer. Freezing food is a delicate matter. No matter what you're freezing, make sure to use it within nine months or so (yes, that means cleaning out your freezer), and also make sure to defrost it correctly.
The best path to freezing hot food, is a rapid chilling process to cool the food before freezing eg. Using a sink of ice water to cool a pot of hot soup. Please contact your health unit website for the exact information on food temp safety parameters for: cooking, holding, chilling and freezing food.