Gapeworms are common in young, domesticated chickens and turkeys. When the female gapeworm lays her eggs in the trachea of an infected bird, the eggs are coughed up, swallowed, then defecated.hen birds consume the eggs found in the feces of an intermediate host such as earthworms, snails (Planorbarius corneus, Bithynia tentaculata and others), or slugs, they become infected with the parasite. The drug Ivermectin is often used to control gapeworm infection in birds.
Maguire and colleagues reported that Avastin delivered monthly cost an average of $595 and Lucentis cost $23,400. If the drugs were taken only as needed, rather than on a monthly basis, the cost dropped for both drugs, but Avastin was still the bargain choice: $385 for the year of treatment compared with $13,800.f the drugs were taken only as needed, rather than on a monthly basis, the cost dropped for both drugs, but Avastin was still the bargain choice: $385 for the year of treatment compared with $13,800.
A report last month from the inspector general of the. estimated that in 2008 and 2009, Medicare paid $1.1 billion for 696,927 Lucentis injections but only $40 million for a greater number â 936,382 â of injections of Avastin.Patients get an injection as often as once a month.nd patients would have had to pay an extra $370 million because the co-payment for Lucentis was $406, compared to only $11 for Avastin. However, dividing a vial of Avastin meant for a single cancer patient into many tiny doses for the eye introduces the risk of microbial contamination.