MySQL WHERE在PHP中匹配带有字符串的连接字符串

Here is my query:

SELECT * FROM events WHERE (audience like '%Internal%20Medicine%') and ('$date' < end_date) order by end_date

In the database the audience column looks like this "Internal Medicine, Neurology, Radiology".

I need the query to match the exact string in between the commas.

Here is a way to do this:

SELECT *
FROM events
WHERE find_in_set('Internal Medicine', replace(audience, ', ', ',')) > 0 and ('$date' < end_date)
order by end_dat;