News of the Pfizer vaccine is spreading like wildfire around the world today. Covid-19 has killed more than 1.2 million people the world over. Today, Pfizer announced a vaccine that has a 90% effective rate with no serious safety concerns. If these numbers are to hold true, Pfizer’s new vaccine would hold up to the childhood disease vaccines like measles. Additionally, Pfizer says it expects to have 15 to 20 million vaccines ready in the US by year’s end provided the FDA issue emergency authorization later this month. They also predict to have over 100 million doses ready worldwide.