Biopharmaceutical
Attention is widely focused on COVID-19 vaccine manufacturing and supply chains. The upswing in demand is expected to generate bottlenecks in areas such as filling and distribution. Other supply chains concerns include ultra-low temperature transport and storage, glass-vial shortages, and insufficient amounts of carbon dioxide to make dry ice. As for production, Adrian La Porta of Bryden Wood believes that global supply of vaccines may be delayed by lack of available personnel worldwide with the necessary expertise.
Pfizer manufactures its COVID-19 vaccine internally, with three separate US manufacturing sites focused on raw materials, mRNA drug substance production, and formulation, fill and finish. Outside the US, in Germany, BioNTech, Pfizer's partner, is manufacturing raw materials, with German contract manufacturing Rentschler providing purification and Pfizer's own site in Belgium performing formulation and vial filling. Additional European suppliers in Germany and Austria are providing lipids and excipients.
Moderna is utilizing contract manufacturers for its vaccine production, including Lonza facilities in the US and Switzerland, using a three-step process. CordenPharma is supplying lipids, drawing on facilities in France, Switzerland and the US. US-based Catalant and Spain-based ROVI are supplying fill and finish services.
Although AstraZeneca has not disclosed its manufacturing suppliers or partners, it has noted that it's using multiple supply chains and facilities encompassing over 20 partners across 15 countries.
As more is learned about the vaccine, it is likely that production volumes and processes will be further finetuned and greater efficiencies will take hold. Yet such changes may threaten the vaccine's regulatory status. But if a regular supply of vaccines is necessary, such as annual vaccination, greater efficiencies could be necessary.
Source: The Chemical Engineer (December 10)