Which type of carrier poses a greater risk to public health?

A sick carrier poses a greater risk to public health because they are actively infected with a pathogen and can transmit the disease to others while exhibiting symptoms. This type of carrier typically sheds a higher concentration of pathogens in their saliva, secretions, or other bodily fluids, making it easier for the disease to spread.

In contrast, a healthy carrier, while still capable of harboring and spreading certain pathogens, often does not exhibit symptoms of illness and may not shed pathogens in significant quantities. This can make it more challenging to identify and control their potential impact on public health. Since sick carriers are often visibly ill and may seek medical attention, they are more likely to prompt public health interventions when an outbreak occurs.

Therefore, the presence of sick carriers in a population can lead to rapid transmission of infectious diseases, resulting in wider outbreaks and increased strain on healthcare resources.