Norovirus can be spread through contact with contaminated surfaces or objects, by contact with an infected person, or by the consumption of contaminated food or water.

BBC: Winter vomiting cases at 1.1 million

The highly contagious virus can be spread by contact with contaminated surfaces or objects, contact with a person who has the infection or through contaminated food and water.

BBC: Winter vomiting bug norovirus levels dip over Christmas

Molluscum contagiousum is highly contagious and easily spread through skin-to-skin contact with someone who is infected or by touching contaminated objects such as a flannel or towel.

BBC: Women in bikinis