CASE #2: Annie is a 68-year-old female who presents to the ER complaining of occasional shaking, chills and muscle aches. She reports that she had acquired an upper respiratory infection one week ago and was slowly improving until two days ago when she developed a more severe cough with significant production of rust-colored sputum. She was brought to the ER by her husband after she woke up mildly confused and complaining of a severe headache and a stiff sore neck that becomes extremely painful when she tilts her head forward. What is your initial diagnosis?