Epidemiology paragraph.

Epidemiology
Infection rates of both T. spiralis and T. solium are not correlated with average consumption of pork per capita. An article Penn Wharton university (2015) shows that the 4 countries that consume the highest quantity of pork annually per capita consisted of China, United States of America and the United Kingdom. However, despite this the distribution between the two species is still different and not correlated with pork consumption, giving an indication that the spread of said worm is in relation to quality control and farming practices.
T. solium shows a much greater difference geographical distribution in comparison to T. spiralis. The countries prominent with high levels of T. solium, as mentioned by Coral-Almediea et al., (2015), include those that have generally poor sanitation, inadequate hygiene, free-roaming pigs and open defecation, and infection rates are increased along with poor cooking standards. Such countries are likely to include Africa, Southern America, and Asia and thus can be concluded because of poor infrastructure which results in poor access to clean water, and so dirty water containing the eggs of T. solium is often used in cleaning and cooking explaining high levels of infection.                                                                                                             Furthermore, the presence of taeniasis does not just occur by oral consumption of meat. Is has also suggested individuals can also become infected via indirect means including, water, wind, flies and others too (Garcia et al., 2003). Suggesting even such implications where maid to remove infection by poor meat sources, 100% eradication may be unlikely.
The presence of T. spiralis is prominent more so in developed countries including Europe and America, yet is still present in developing countries including countries of Africa, Asia, and others such as New Zealand (Gottstein et al., 2011). As a result, reduction in the number of cases that have occurred is made easier by alteration of infrastructure in these countries. This is specifically seen in America, whereby in the 1940s there where estimated 400 people each year being infected with T. spiralis, and it is now reduced to 20 a year in 2008-2010 (Center for Disease Control and prevention. 2012). This is because there was an investment in pork raising practices and commercial freezing and general education into the consequences of undercooking raw meats including pork.