Pneumococci are enclosed within a capsule consisting of repeated units of polysaccharides. The composition of the polysaccharides defines the serotype, and 91 pneumococcal serotypes have been described to date, with more on the way. The 91 serotypes are divided into 25 types and 21 groups. Each group consists of 2-5 serotypes which are very similar.
Product description
Pool, type and factor antisera are produced by immunising rabbits with killed whole cells. Pool antisera are a mixture of antisera. Pools A-I contain antisera against all serotypes, while pools P‑T are mixtures of antisera against the 23-valent vaccine serotypes. By combining the two Pool systems (the Pneumotest products), the 23 serotypes can be serotyped easily to type/group level.
Contains antisera against
Pool A, type 1, 2, 4, 5, group 18
Pool B, type 3, 8, group 6, 19
Pool C, type 20, 31, 40, group 7, 24
Pool D, type 36, 37, group 9, 11, 16
Pool E, type 21, 39, group 10, 12, 33
Pool F, type 27, group 17, 22, 32, 41
Pool G, type 29, 34, 42, group 35, 47
Pool H, type 13, 14, group 15, 23, 28
Pool I, type 38, 43, 44, 45, 46, 48, group 25
Pool P, type 1, 14, group 7, 19
Pool Q, group 6, 18, 23
Pool R, type 3, 4, group 9, 12
Pool S, type 5, 8, group 10, 15, 17
Pool T, type 2, 20, group 11, 22, 33
Type antisera react specifically with the serotype in question.
Group antisera are specific antisera reacting with all serotypes in the group in question. The ultimate identification of the serotypes in the group is carried out by serotyping with factor antisera. The combination of the results defines the serotype.