Final answer:
Asymptomatic individuals with STIs can still transmit the infection to sexual partners and are at risk for long-term health issues if left untreated. Prevention through vaccines and safe sex is crucial in reducing transmission.
Step-by-step explanation:
People with STIs who are asymptomatic can transmit the disease to others through sexual contact. Being asymptomatic means that the individual shows no symptoms of the infection, such as sores, rashes, or painful urination. Despite the lack of symptoms, the pathogens can be passed to sexual partners, and the asymptomatic individuals can still experience long-term health problems if the STIs remain untreated. Certain STIs, such as herpes simplex virus, often do not present noticeable signs or symptoms. Continuous awareness and testing are important as untreated STIs can lead to more serious conditions, with some like untreated syphilis potentially causing death after advancing through various stages. Additionally, prevention measures such as vaccines (e.g., HPV vaccine) and safe sex practices are crucial for reducing the spread of STIs.