Hi Harry,
An egg per gramme reading of 200 for coccidia in pigs is very low and does not require treatment
Low levels are between 2 - 5000 EPG and not considered significant unless it reaches greater than 10,000 epg.
A far better source of external data on pig worms is here :
http://www.thepigsite.com/pighealth/article/407/internal-parasitesThanks