The female mite burrows under the skin and deposits its eggs. These eggs mature after about 2 weeks. During this period and for up to 1-2 weeks after, the affected person has no symptoms. Thus one may even be transmitting the disease and not know one has contracted it until much later. It is common for mothers to transmit the disease to their infants and also by direct contact from person to person. Young adults tend to contract scabies from sexual activity. One would expect transmission also in schools but the level of contact in schools is not close enough to facilitate transmission. There have been documented transmission by wearing contaminated gloves or handling heavily contaminated clothing. It may also be transmitted by lying on a contaminated bed. A different species infects cats and dogs and usually would not cause severe illness in humans.