The primary way that SARS appears to spread is by close person-to-person contact. SARS-CoV is thought to be transmitted most readily by respiratory droplets (droplet spread) produced when an infected person coughs or sneezes. Droplet spread can happen when droplets from the cough or sneeze of an infected person are propelled a short distance (generally up to 3 feet) through the air and deposited on the mucous membranes of the mouth, nose, or eyes of persons who are nearby.

Meningococcal disease is spread through air droplets and by direct contact with secretions from infected persons (e.g., through coughing, kissing). Teenagers and college students can reduce the risk of transmitting the disease by not sharing personal items (e.g., utensils, waters bottles, drinking glasses) and by being immunized.

The incubation period for SARS is believed to be short, around three to six days. The speed of international travel does, however, create a risk that cases can rapidly spread around the world.

A corkscrew-shaped microbe, Borrelia burgdorferi, causes Lyme disease. Deer ticks-small ticks that usually feed on deer, mice, and birds-carry the bacterium and spread it to humans they bite. In the U.S., most cases of Lyme disease are restricted to the northeast, the mid-Atlantic, the upper north-central states, and northwestern California. Ticks tend to live near the ground in moist, shaded areas, particularly in tall grasses, leaf litter, overgrown brush, and woody environments.

No. A head lice infection is not a life threatening health condition – like similar health conditions such scabies, and ringworm, it is a parent or guardian’s responsibility to treat and care for their child.

The disease can spread from country to country through international trade in live poultry. Migratory birds, including wild waterfowl, sea birds, and shore birds, can carry the virus for long distances and have, in the past, been implicated in the international spread of highly pathogenic avian influenza. Migratory waterfowl – most notably wild ducks – are the natural reservoir of bird flu viruses, and these birds are also the most resistant to infection.

Healthy birds are infected when there is direct contact with infected bodily discharges of infected birds such as droppings and secretions from the nose, mouth, and eyes. Close confinement causes a rapid spread of disease among birds. All bodily discharges contain high concentration of END virus. Therefore, the virus-bearing material can be picked up on insects, rodents, containers, shoes and clothing and carried from a sick flock to a healthy flock.