A biological attack is the deliberate release of germs or other biological substances that can make you sick. Many agents must be inhaled, enter through a cut in the skin or be eaten to make you sick. Some biological agents, such as anthrax, do not cause contagious diseases. Others, like the smallpox virus, can result in diseases you can catch from other people.

If There Is A Biological Threat

Unlike an explosion, a biological attack may or may not be immediately obvious. While it is possible that you will see signs of a biological attack, as was sometimes the case with the anthrax mailings, it is perhaps more likely that local health care workers will report a pattern of unusual illness or there will be a wave of sick people seeking emergency medical attention. You will probably learn of the danger through an emergency radio or TV broadcast, or some other signal used in your community. You might get a telephone call or emergency response workers may come to your door.

In the event of a biological attack, public health officials may not immediately be able to provide information on what you should do. It will take time to determine exactly what the illness is, how it should be treated, and who is in danger. However, you should watch TV, listen to the radio, or check the Internet for official news including the following:

Are you in the group or area authorities consider in danger?

What are the signs and symptoms of the disease?

Are medications or vaccines being distributed?

Where? Who should get them?

Where should you seek emergency medical care if you become sick?

During A Declared Biological Emergency:

If a family member becomes sick, it is important to be suspicious.

Do not assume, however, that you should go to a hospital emergency room or that any illness is the result of the biological attack. Symptoms of many common illnesses may overlap.

Use common sense, practice good hygiene and cleanliness to avoid spreading germs, and seek medical advice.

Consider if you are in the group or area authorities believe to be in danger.

If your symptoms match those described and you are in the group considered at risk, immediately seek emergency medical attention.

If You Are Potentially Exposed:

Follow instructions of doctors and other public health officials.

If the disease is contagious expect to receive medical evaluation and treatment. You may be advised to stay away from others or even deliberately quarantined.

For non-contagious diseases, expect to receive medical evaluation and treatment.

If You Become Aware Of An Unusual And Suspicious Substance Nearby:

Quickly get away.

Protect yourself. Cover your mouth and nose with layers of fabric that can filter the air but still allow breathing. Examples include two to three layers of cotton such as a t-shirt, handkerchief or towel. Otherwise, several layers of tissue or paper towels may help.

Wash with soap and water.

Contact authorities.

Watch TV, listen to the radio, or check the Internet for official news and information including what the signs and symptoms of the disease are, if medications or vaccinations are being distributed and where you should seek medical attention if you become sick. If you become sick seek emergency medical attention.

Chemical threat

A chemical attack is the deliberate release of a toxic gas, liquid or solid that can poison people and the environment.

Possible Signs of Chemical Threat

Many people suffering from watery eyes, twitching, choking, having trouble breathing or losing coordination.

Many sick or dead birds, fish or small animals are also cause for suspicion.

If You See Signs of Chemical Attack: Find Clean Air Quickly

Quickly try to define the impacted area or where the chemical is coming from, if possible.

Take immediate action to get away.

If the chemical is inside a building where you are, get out of the building without passing through the contaminated area, if possible.

If you can't get out of the building or find clean air without passing through the area where you see signs of a chemical attack, it may be better to move as far away as possible and shelter-in-place.

If you are outside, quickly decide what is the fastest way to find clean air. Consider if you can get out of the area or if you should go inside the closest building and "shelter-in-place."

If You Think You Have Been Exposed to a Chemical

If your eyes are watering, your skin is stinging, and you are having trouble breathing, you may have been exposed to a chemical.

If you think you may have been exposed to a chemical, strip immediately and wash.

Look for a hose, fountain, or any source of water, and wash with soap if possible, being sure not to scrub the chemical into your skin.

Seek emergency medical attention.

source: ready.gov