Which bacteria primarily spreads through direct contact with infected respiratory discharges?

The bacteria that primarily spreads through direct contact with infected respiratory discharges is A Streptococcus. This type of bacteria is commonly associated with respiratory infections, such as strep throat, and can be transmitted when droplets containing the bacteria are expelled during coughing, sneezing, or even talking. Close contact with an infected individual or exposure to respiratory secretions can facilitate the spread of A Streptococcus, emphasizing the importance of infection control measures in managing respiratory infections in settings like nursing homes.

In contrast, while the other bacteria listed may have routes of transmission connected to respiratory issues or other infections, A Streptococcus is specifically notable for this mode of transmission through respiratory discharges, making it the correct choice in this context.