Which vaccines are conjugate?

Hib conjugate vaccine is the most commonly used conjugate vaccine. Asymptomatic carriage of the bacteria gets reduced by vaccines that are conjugate. You can read about the Zoonotic Diseases – Definition, Types, and how they spread in the given link.

Further readings:

1. Science & Technology Notes For UPSC – General Science Notes 
2. Science & Technology Questions in UPSC Mains GS-3