J&J shares suffer on uncertain vaccine data

29 January 2021

An interim analysis of Phase III data has been presented on the investigational COVID-19 vaccine from Johnson & Johnson’s (NYSE: JNJ) Janssen unit.

The candidate, called Ad.26.COV2.S or JNJ-78436725, requires only a single injection and can be stored in a refrigerator for months, but the early signs are that it might not be quite as effective as the vaccines from Pfizer (NYSE: PFE), Moderna (Nasdaq: MRNA), AstraZeneca (LSE: AZN) and, recently, Novavax (Nasdaq: NVAX).

New variants skewing comparisons?

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