Sara, a 35-year-old Hispanic woman, visited her family physician complaining of a persistence fever. She states that she has been feverish for the past five days. The patient state that she could not remember any feverish episodes in the past. She was diagnosed with tuberculosis as a teenager. She is currently taking any medication and occasionally drinks alcohol. He had contracted tuberculosis when he was 17 , but he had no family history of TB. Sara tells her doctor that 2 days prior to her visit, she had suddenly developed chills, a sore throat, and a fever ( 39.40 C ). Blood tests were done which showed that his white blood cell (WBC) count was elevated ( 12 , 000 U / L ) along with other tests that indicated inflammation. Rapid antigen tests for influenza and pneumococcus negative. A sputum was also collected for culture. Sara was sent home, but her fever continued to rise. She went to the ER, was admitted to the hospital, and initially diagnosed with bronchopneumonia. Intravenous antibiotics were started. On the second day after admission, the patient's temperature began to subside and the sputum smear was negative for acid-fast bacilli. In addition to the lab results shown below, the organism isolated from the sputum and blood cultures was also PYR positive. 1. What is the diagnosis of this patient? a. Sepsis due to bacterial infection b. Bacterial bronchopneumonia and bacteremia c. Upper respiratory bacterial infection d. Generalized viral infection 2. What agent do you think is causing this problem? a. Streptococcus preumoniae b. Staphylococcus aureus c. Streptococcus pyogenes d. Streptococcus agalactiae 3. Which test allows to determine (differentiate) between the possible Streptococcal species which caused Sara's infection. a. bacitracin susceptibility test b. catalase test c. gram stain d. hemolytic pattern 4. List one other disease that this organism may cause 5. What is the major virulence factor of this organism?.