Question

identifying the cause of infection
page 1: page 2:
tia is studying the effects of disease on public health.
she begins by looking at the spread of hepatitis b. she would like to examine how the causes and the consequences of this infectious disease are related. help her complete the following flow chart.
what did tia enter in item #2 of the flowchart to further explain the process of a hepatitis b infection?

• this pathogen spreads through childbirth or close physical contact with an infected person.
• people with strong immune systems fight hepatitis infections more easily.
• this pathogen infects people who practice safe food handling practices.
• genetic makeup places some people at risk for contracting hepatitis.

Explanation:

To determine the correct answer, we analyze each option:

• Option 1: Hepatitis B spreads through childbirth, close physical contact (like sexual contact), or contact with infected blood. This is a correct description of its transmission, which would help explain the infection process in a flowchart about causes/consequences.
• Option 2: Discussing immune systems fighting the infection is about the body's response, not the cause/process of infection spread, so it's not relevant for explaining the infection process.
• Option 3: Safe food handling practices do not relate to hepatitis B transmission (hepatitis A is more food - borne), so this is incorrect.
• Option 4: Genetic makeup is not a primary risk factor for hepatitis B; it's mainly transmitted through exposure to infected blood/body fluids, so this is incorrect.

Answer:

A. This pathogen spreads through childbirth or close physical contact with an infected person.