Bacterial cell lysis, opsonization, increased phagocytic activity, and increased blood vessel permeability are effects of complement activation except interference with the viral replication. Thus, the correct option is A.
Complement activation is a cascading event. Complement activation must follow a specific order if the end result is to be achieved. The circulating proteins in the activation have been grouped into three different activation pathways, which are based on the types of substances and proteins that initiate the activation process.
The three main consequences of complement activation process are the tagging of cells by C3b degradation products for phagocytosis, chemotaxis of the inflammatory cells in response to C3a and C5a, and the MAC-mediated cell lysis of the infected cells.
Therefore, the correct option is A.
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