Yes we did we had microbes before we were born
The measles virus and rubella virus are two separate viruses. They have different DNA and RNA structures, and the vaccination for the measles virus only "knows" how to attach itself to measles and destroy the virus. It doesn't know how to attach itself to the rubella virus to destroy it, as the vaccination is needed to inform it how to.
The advantage of vaccinating a large amount of the population is that it reduces the chance someone will catch sickness by a great amount, and can possibly eradicate the virus.
Potassium holds an important function in both cell and energy-related functions. Potassium is considered to be one of the important blood minerals. Potassium regulates the balance of both water and acid in our blood and body tissues. Food which are high in potassium include white beans, spinach, plain yogurt, broccoli, sweet potato milk, bacon, oranges and many more. One should avoid the excessive intake of salt because too much intake of salt in the body may cause complications or illnesses in our body. Some illnesses caused by too much salt in the body are fluid retention, high blood pressure, Kidney problems and heart failure.