Vitamin D and Ivermectin

Influenza (flu) and colds are similar to coronaviruses in that they are seasonal. They mostly occur in the fall and winter. Many people falsely assume that this is the only time the viruses are active. Actually, the viruses are present year-round. Why don't people get sick with them in the spring and summer? It is because of the relationship of vitamin D and our immune system. Vitamin D is made within our bodies as sunlight shines on our skin. In the fall and winter, those living above the 35th parallel (latitude 35 degrees north), do not get enough sunlight to make sufficient vitamin D.