Which tick-borne disease is transmitted to the host in as little as 15 minutes?

Which tick-borne disease is transmitted to the host in as little as 15 minutes?

• A. Lyme disease
• B. Anaplasmosis
• C. Rocky Mountain spotted fever
• D. Powassan encephalitis

Answer: (D)

Some tick-borne pathogens can cross into a host very quickly once a tick begins feeding because the pathogen is already in the tick’s saliva. Powassan encephalitis virus is notable for this rapid transfer—transmission can occur in as little as about 15 minutes of tick attachment. This stands in contrast to other common tick diseases, where transmission typically requires a longer feeding period (often 24 hours or more) for the pathogen to move from the tick into the host. Powassan is a flavivirus carried by Ixodes ticks in North America and can cause severe encephalitis, so prompt tick checks and rapid removal are crucial for prevention. Although rare, its ability to be transmitted so quickly makes it the best answer for this scenario.

Some tick-borne pathogens can cross into a host very quickly once a tick begins feeding because the pathogen is already in the tick’s saliva. Powassan encephalitis virus is notable for this rapid transfer—transmission can occur in as little as about 15 minutes of tick attachment. This stands in contrast to other common tick diseases, where transmission typically requires a longer feeding period (often 24 hours or more) for the pathogen to move from the tick into the host. Powassan is a flavivirus carried by Ixodes ticks in North America and can cause severe encephalitis, so prompt tick checks and rapid removal are crucial for prevention. Although rare, its ability to be transmitted so quickly makes it the best answer for this scenario.