Posted: 24/03/2016 at 14:03
If I were to think like that, then I just wouldn't touch anything.
I do wear gloves mostly, but there is something nice about touching the soil. Cat mess totally turns my stomach and puts me into paranoid mode. Growing up with cats, it's likely I already harbour toxoplasma gondii.
I had a great book title 'Humanure', and in that they talk about the joys of night soils. And suggest planting a green manure in the composted night soil, that you further compost, if you really want to be safe. Human waste I think they wrote was safe after a year of rotting. So perhaps the best thing to do is just let compost sit for a good while.
Going further off-topic, I read an article about house hygiene, where it mentioned that houses that had the flow of outside in, were healthier. It all seems counter intuitive, but dog households are healthier. So I try not to worry too much.
Avoid scratching eyes and picking your nose in the garden!