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What period of disease is occurring when a patient is most likely to spread a contagious disease?

You are treating a patient named John who has strep throat caused by Streptococcus pyogenes that has not improved with antibiotics. What is likely causing this? 

Examine the map below. What measurement of illness does the red line, labeled as “Active HIV/AIDS Infections”, indicate?

What is false about cephalosporins? 

Which diagram is a β{“version”:”1.1″,”math”:”β”}-lactam structure found in antibiotics like penicillin?  

Which drug class has saved more lives since its discovery than any other? 

Match the abbreviation to its meaning. 

True or False: The following scenario is an example of antibiotic prophylaxis.  Scenario: A patient is admitted to the emergency room with a dog bite. The dog’s teeth cut through the skin and caused minor bleeding. After the wound is cleaned and dressed, the ER physician administers a Tetanus booster shot (Tdap) and prescribes Augmentin (amoxicillin-clavulanate) for the patient to take at home because dog bites often lead to bacterial infections. The Tdap and Augmentin are not prescribed to treat an active infection, but to prevent infection from developing.

Which pathogen is the most virulent based on the ID50?

Identify each feature listed below as part of the physical, chemical, mechanical or cellular aspect of the innate immune system by matching to the appropriate term.  Note: Matches may be used more than once.