Germs like to travel. They use whatever they can to move from place to place - including people. This is how infections are spread and is also why it's especially important to take extra hygiene precautions if somebody is ill - otherwise everybody in the house might catch it.
As well as the obvious places like the toilet, germs also love to hang around on surfaces that are touched by lots of people, like door handles and light switches before hitching a ride on the next unlucky person who uses them.
If you thought you were alone in the shower, think again. Shower curtains provide ideal conditions for mould to grow. Studies have found bacteria such as E-coli and Staphylococcus.
An easy route into the home for a germ is on raw food. This can include fruit and vegetables as well as raw meat and poultry. Once on the work-surface it's easy for germs to be transferred to other areas of the kitchen and even around the home. So make sure the surfaces are cleaned after each food preparation session, paying particular attention when raw meat is used.
Every time you flush the toilet, millions of tiny, water droplets are ejected into the air - they could land anywhere in the bathroom, including the taps and your toothbrush. Usually this isn't a problem, but if somebody is ill the water droplets can contain disease-causing bacteria or virus particles which could then be picked up by somebody else. As well as the toilet rim, germs can build up on the seat, bowl and cistern - not to mention the flush handle.