Add the sample code below to your child theme's functions.php file or in a site specific plugin.
<?php
//* Do NOT include the opening php tag
//* Enable Jetpack on single event pages
function ee_enable_jetpack_social_sharing_single_event_pages() {
if ( 'espresso_events' == get_post_type() && is_singular() && !post_password_required() ) {
if ( function_exists( 'sharing_display' ) ) {
sharing_display( '', true );
}
}
}
add_action( 'AHEE_event_details_before_the_content', 'ee_enable_jetpack_social_sharing_single_event_pages' );
References:
http://eventespresso.com/topic/jetpack-social-sharing-not-working-on-ee-events/
Check out more recommendations for Event Espresso:
http://enzo12.com/labs/event-espresso/