High rise in Aborted_connects on mysql slave servers
How to solve Aborted_Connects problem

1) Increase the wait_timeout variable value in [my.cnf]

2) Set the log-warnings variable to greater than 1. This will start logging the aborted connections in the mysql error log file once you identified and fixed the problem you can set it back to 1 again.

Also, You can have a look at this forum discussion which is relevant to Load balancer which checks database health every second
http://forums.mysql.com/read.php?144,194590,194590#msg-194590