Scientists create universal nasal spray vaccine that protects against COVID, flu, and pneumonia

Scientists have made a big step towards a universal vaccine. This new vaccine could protect us from many illnesses, like COVID, the flu, and pneumonia. It's a nasal spray, so you breathe it in through your nose. In tests with mice, it gave them protection for months. The vaccine protects against viruses, bacteria, and even things that cause allergies. One of the scientists, Dr. Pulendran, said the protection was better than they expected. This experimental vaccine is different from other vaccines. Normal vaccines show your body a piece of the germ so it can recognize it later. This new vaccine works in a different way. If it works for people too, it could replace many shots. This would be a major advantage because it could also provide rapid protection if a new virus appears.