It is easy in a world that is continously darker to get despair or even scared for your life. This should not be the case as no matter what happens God predestines all things. He even predestined Evil for use of His Own purposes. He has setup pur rulers for His own reasons and brings them down.
In His Providence all things come to us from diseases to health, to the time of our very death. There us not a maverick quark or atom or molecule. All of it comes from God's Eternal and immutable decree. We need to learn to relax and rest in God and that He has a reason for all things no matter out of control live might seem.