A vaccine is a biological preparation that provides active acquired immunity to a particular disease. A vaccine typically contains an agent that resembles a disease-causing micro-organism and is often made from weakened or killed forms of the microbe, its toxins or one of its surface proteins. The agent stimulates the body's immune system to recognize the agent as a threat, destroy it, and keep a record of it, so that the immune system can more easily recognize and destroy any of these micro-organisms that it later encounters. Vaccines can be prophylactic (example: to prevent or ameliorate the effects of a future infection by any natural or "wild" pathogen), or therapeutic (e.g., vaccines against cancer are also being investigated).

Health care or healthcare is the maintenance or improvement of health via the diagnosis, treatment, and prevention of disease, illness, injury, and other physical and mental impairments in human beings.

A remarkable change has been seen in the medical facilities in the United States. The introduction of Obamacare has not only provided medical facilities to citizens but it is also instrumental in imbibing faith in the minds of the citizens of this wonderful country. The trust has been developed in the minds of the people that Obamacare is at their disposal and when it comes to healthcare, they are not required to risk it and Obamacare lends a helping hand.

Another hot topic is Marijuana (weed). Marijuana has become an enigma of sorts. The use of Marijuana or Marihuana is debatable. Many people are of the opinion that it helps in keeps body healthy and active. However, some people are voicing different opinion about the side effects of Marijuana.

Finally is health via vaccination. With no doubt, children are future of a nation. The federal cannot deny this fact and they need to ensure that each and every child of the beautiful country should be vaccinated. The vaccination provides a cover from diseases. The vaccination provides a cover and children are immune in the extreme weather conditions.

In a nutshell, limited access to health care varies across the country along with the different ethical questions that come up.