Simplify the following text for a Grade 16 native English-speaking person.
Original: However , according to the Veal Quality Assurance Program & Veal Issues Management Program industry fact sheet , and the Ontario Veal Association , individual housing systems are important for disease control , and in reducing the possibility of physical injury .
Simplified: Though a lot of people think the crates are bad because the calves ca n't move much and get sick , the Veal Quality Assurance Program & Veal Issues Management Program industry fact sheet , and the Ontario Veal Association say the crates are important for keeping out diseases and keeping the calves from getting hurt .