Vaccinations are the most effective way to establish immunity to the new coronavirus. Furthermore, it is hoped that persons who have been exposed to COVID-19 would develop immunity to it. When you have immunity, your body recognizes the infection and fights it off. There are several ways that vaccines have been proposed for COVID-19 so far including a vaccine composed of live viruses, one composed of dead viruses, and one that uses parts of the virus's DNA. There are many different types of vaccinations available including vaccines for diphtheria, tetanus, pertussis (whooping cough), measles, mumps, rubella, hepatitis A and B, meningitis, and polio. There are also allergy vaccines which protect against allergies to certain substances such as peanuts, eggs, milk, etc. The concept of "immunity" against COVID-19 has been discussed as a possibility but has not yet been proven. In studies on SARS and MERS infections, researchers have shown that after people have recovered from the initial infection, they were protected from future attacks by the same virus. This idea may also apply to COVID-19 since all three viruses belong to the family Coronaviridae. Studies are currently underway to see if antibodies developed during an infection can prevent COVID-19.