Symptoms usually appear within 1-14 days after infection with the bacteria. Average is within 3-5 days.

The incubation period is variable but is normally 3 to 8 weeks. Incubation periods up to several years have been reported. Patients having severe bites or bites about the head usually have the shortest incubation periods.

Many people carry staph bacteria on their skin without symptoms. Symptoms of a MRSA or other staph infection depend on where the infection is located. Infections of the skin are the most common and cause symptoms such as redness, warmth, pus, and a wound that does not heal. Your doctor may refer to these infections as boils, furuncles, impetigo, or abscesses. Infections can also develop in the blood, bone, bladder, lungs, and other sites.

The common symptoms are a severe sore throat with a yellow or white coating on the tonsils. The tonsils or the throat are swollen and red. A throat infection is often accompanied by fever, painful swallowing and swollen lymph glands. When suffering from a persistent sore throat you must consult your doctor. Untreated, infections can lead to problems with heart or kidneys.

Staph bacteria, including MRSA, can cause skin infections that may look like a pimple or boil and can be red, swollen, painful, or have pus or other drainage. More serious infections may cause pneumonia, bloodstream infections, or surgical wound infections.

The symptoms of a first outbreak of genital herpes usually appear 2 to 10 days after exposure to herpes and last an average of 2 to 3 weeks. With the first infection, without treatment the sores typically are active (that is, red, irritated, perhaps painful) for 1-2 weeks, then take another 7-10 days to heal completely, so total time from onset to complete healing generally pmtis 2-4 weeks. Recurrent outbreaks are briefer, typically 7-14 days.

Unfortunately, Hepatitis often goes undiagnosed because symptoms are mild or suggest only a flu-like illness. Many people have no symptoms at all. The only way to know for sure if you have Hepatitis is to have a blood test. Ask a doctor or needle exchange site where you can get tested, or call the National Hepatitis Hotline at 1-800-465-4837. You are usually safe to get tested within two weeks after potential exposure to know for sure.

The less severe form of Legionella infection is Pontiac Fever, which manifests itself as a self-limiting flu-like illness. The incubation period is remarkably short - in terms of hours to several days - and symptoms will include malaise, muscle aches (myalgia), fever, chills and headache. Patients will, however, typically recover completely within one week. Legionnaires' Disease is the more severe manifestation of Legionella infection.

It is important to remember that less than 1% of mosquitoes carry the West Nile virus. In rare cases where a bug bite leads to infection, that person may experience mild symptoms such as fever, headache and body aches, occasionally coupled with a skin rash and/or swollen lymph glands. More severe infections may be marked by headache, high fever, neck stiffness, stupor, disorientation, coma, tremors, convulsions, muscle weakness, paralysis and rarely, death.

To date, no cases of SARS have been reported among persons who were exposed to a SARS patient before the onset of the patient's symptoms.

After infection there is an incubation period of 2-14 (OIE) 1-21(USDA) days during which the virus multiplies.

No. Some will appear while others may not appear at all. This can cause difficulties in diagnosing meningitis, complicated by the fact that many symptoms are like the common cold. However, over and above the symptoms themselves, it will become obvious to anyone close to the sufferer that he/she is becoming VERY ill VERY quickly.

Most people who are infected with West Nile virus will not have any type of illness. It is estimated that 20% of the people who become infected will develop West Nile fever: mild symptoms, including fever, headache, and body aches, occasionally with a skin rash on the trunk of the body and swollen lymph glands.

Most people who are infected with WNV either have no symptoms or experience mild illness such as fever, headache and body aches before fully recovering. Some persons may develop a mild rash or swollen lymph glands. In some individuals, particularly the elderly, WNV can cause serious disease that affects the brain tissue. At its most serious, it can cause permanent neurological damage and can be fatal.