Description: Segment 1 Dr Gilliland introduces Prof. Perkins, who begins the lecture by showing a film of the parasitic organism Toxoplasma gondii. He discusses how this parasite, usually found in animals, can be passed to humans. A list of the serious symptoms of congenital infection is shown. Perkins says that the infection is widespread throughout the world, and also discusses clinical diseases caused by toxoplasmosis, such as lymphadenopathy with pyrexia. He then talks about a study of pregnant women in Paris, many of whom tested positive for toxoplasmosis. Time start: 00:00:00:00 Time end: 00:05:03:23 Length: 00:05:03:23 Segment 2 Perkins continues to talk about the Paris study, in particular how many infected pregnant women went on to infect their babies. He then discusses research into whether toxoplasmosis could cause uveitis (inflammation of middle layer of eye) in the adult. The results of tests of adults with uveitis are seen in a table. Another table shows the results of treatment with an anti-toxoplasmic drug. He also talks about some anomalies in these findings. Time start: 00:05:03:23 Time end: 00:09:51:03 Length: 00:04:47:05 Segment 3 Next, Perkins discusses chorioretinitis (inflammation of the choroid and retina), including when it occurs, the symptoms and diagnosis. Photographs of lesions are seen. He then talks about this infection in relation to toxoplasmosis, and whether anti-toxoplasmosis drugs can be used to treat it. Time start: 00:09:51:03 Time end: 00:15:36:00 Length: 00:05:44:22 Segment 4 Perkins continues to talk about dosage of anti-toxoplasmosis drugs to treat chorioretinitis. He then talks about infection figures of immigrants from West Africa and the West Indies (he uses the term 'Negro population'). He discusses how the disease seems to be more severe in people with an Afro-Caribbean background. He ends the lecture by summarising his main points. Time start: 00:15:36:00 Time end: 00:19:44:24 Length: 00:04:08:24