Emerging infections represent a special danger. Consider wha…

Emerging infections represent a special danger. Consider what features or human actions may contribute to the new pathogens, reemerging diseases, or increased incidences of these types of infections. All of the following factors contribute to the threat of emerging infectious diseases (EIDs) EXCEPT __________.

Heidi woke up one day with pain in her left knee. Her moveme…

Heidi woke up one day with pain in her left knee. Her movement is limited because of swelling. Heidi decides to visit her doctor. Her examination shows that vital signs are normal and she doesn’t have a rash around her knee. Her knee is erythematous (skin redness) and warm to the touch. There is a visible swelling or effusion (escape of fluid into the synovial cavity) around the joint. Which of the following would most likely be used to collect a sample of synovial fluid from this site?