went to bed that night with soar arm and a headache. Then woke later in the next morning to chills, Body aches and a low grade fever. Malaise lasted all day and through wed night,,This Morning still chills and shakes waking me up, headache a fever into the early Morning.....Finally around the 48 hr mark starting to feel better, Defiantly taking some Tylenol before bed,,been hydrating like Bitch! Happy this part is now over for me,,,Just thought Id share for those who are in line, as in what you could expect...I have several family members and friends in their late 60's and early 70's have just a slight headache from the 2nd,,,as you age your immune system weakens, So you get less of a response,,but you still get the protection.