What is the major concern regarding Risk Group 2 pathogens?

The major concern regarding Risk Group 2 pathogens is that they may pose moderate health risks to individuals working with or exposed to them. These pathogens can cause disease in humans but generally do not spread easily from one individual to another. The risks associated with them are significant enough to warrant specific biosafety practices and control measures, but they are not as severe as those associated with higher-risk groups.

Pathogens in this category can cause important health problems, particularly in immunocompromised individuals or when exposure occurs in certain environments, such as healthcare settings. This necessitates adequate training, use of personal protective equipment, and safety protocols to prevent exposure and manage any potential infections effectively.

In contrast, other options highlight characteristics that do not align with the primary concern of Risk Group 2 pathogens. For instance, their treatability varies and does not negate the need for caution, nor does their lower potential for contagiousness lessen the risks they can pose under specific circumstances. Furthermore, the low infectivity does not apply, as Risk Group 2 pathogens are recognized for their capacity to cause moderate illness, which necessitates vigilant biosafety practices.