1990
DOI: 10.1089/vim.1990.3.243
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Production of Poliovirus Vaccines: Past, Present, and Future

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Cited by 27 publications
(8 citation statements)
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“…The different culture conditions used per cell line represented envisioned production conditions for each cell line for a direct comparison of production platforms. Vero cell cultivation mimicked as closely as possible cIPV production as described in literature [28][29][30][31]. When certain parameters were unknown, conditions were optimized (shaking speed, cell seeding density, micro-carrier type and time post seeding prior to inoculation) to obtain the highest cell density for infection.…”
Section: Sabin Strain Infection Results In Higher Infectious Titer Anmentioning
confidence: 99%
“…The different culture conditions used per cell line represented envisioned production conditions for each cell line for a direct comparison of production platforms. Vero cell cultivation mimicked as closely as possible cIPV production as described in literature [28][29][30][31]. When certain parameters were unknown, conditions were optimized (shaking speed, cell seeding density, micro-carrier type and time post seeding prior to inoculation) to obtain the highest cell density for infection.…”
Section: Sabin Strain Infection Results In Higher Infectious Titer Anmentioning
confidence: 99%
“…In OPV manufacturing, the virus cultivation temperature for Sabin PV is lower (at a maximum of 35°C [24]) than the temperature used for wild-type PV in conventional IPV manufacturing (36-37°C) [18,35]. This lower temperature is required to ensure the temperature sensitivity of the Sabin PV and minimize revertants to ensure a safe OPV.…”
Section: Resultsmentioning
confidence: 99%
“…In principle, OPV manufacturers could, by acquiring correct downstream processing (DSP) equipment, produce sIPV. However, larger quantities of virus harvest (100-800 fold of current production quantities) are needed and upstream processing (USP) should be scaled-up [18]. …”
Section: Introductionmentioning
confidence: 99%
“…OPV/Sabin strain content also varies considerably depending on the medium (Table V). Cell culture harvests in OPV production facilities are on the order of 10 8 CCID 50 /ml under standard production conditions of 34°C, ( 50 ) but often exist as concentrates of 10 10 to 10 11 CCID 50 /ml. OPV formulations are in a 10‐1‐3 or 10‐1‐6 ratio, that is, 10 × 10 5 – 1 × 10 5 – 6 × 10 5 CCID 50 /dose for types 1, 2, and 3, respectively.…”
Section: Infectious and Potential Infectious Materialsmentioning
confidence: 99%
“…OPV formulations are in a 10‐1‐3 or 10‐1‐6 ratio, that is, 10 × 10 5 – 1 × 10 5 – 6 × 10 5 CCID 50 /dose for types 1, 2, and 3, respectively. ( 50,205 ) In the research and diagnostic laboratory, cell culture titers may be a few fold less for Sabin than for WPV, ( 124 ) but are very similar on the average. Also similar to WPV, pharyngeal secretions range from >10 2 to 10 4.5 CCID 50 /swab ( 85 ) and peak titers in stools range between 10 5.1 and 10 6.2 CCID 50 /gm.…”
Section: Infectious and Potential Infectious Materialsmentioning
confidence: 99%