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Which of the following is not a common way we diagnose viral infections?

A 36-year-old man is seen for jaundice. He remembers that he woke up with a fever and abdominal pain 4 days earlier and since then has had no appetite and has felt very tired. His AntiHAV Igm test is positive.  Which of the following is a major mechanism for transmission of this disease?

Only viruses with double-stranded DNA, like our own, can infect human cells.

Fatigue can increase MSD risk by altering posture, reducing coordination, and increasing reliance on compensatory movements.

Which characteristic most commonly distinguishes cumulative trauma disorders from acute musculoskeletal injuries?

A worker performs repetitive overhead reaching tasks throughout the shift. Identify two ergonomic risk factors and recommend one control to reduce MSD risk.

Which of the following best defines a work-related musculoskeletal disorder (MSD)?

Which ergonomic risk factor is most closely associated with reduced blood flow and rapid muscle fatigue?

Which of the following tasks would most likely involve high static muscular load?

Static muscular work is best described as which of the following?