For almost two centuries, vaccines have provided a safe and effective method of averting a number of infectious diseases. Despite recent concerns about the safety of some vaccines, the vaccines currently available are a million times safer than the diseases they are designed to prevent. Vaccines, on the other hand, should be used in conjunction with other public health initiatives wherever possible. Misinformation, which is widely available on the internet and in print, can cause the general public to believe that vaccines are dangerous and unneeded. One important solution is education. Some vaccines must be given intravenously, while others must be given orally or intranasally. Vaccines for the skin and the uterus are being studied. Only a few viral and bacterial diseases have vaccines accessible presently. Vaccines against a wide range of viral and bacterial illnesses, as well as fungal and protozoan diseases, are expected to be developed in the future.Different COVID-19 Vaccines: