Safety and immunogenicity of PHH-1V as booster vaccination through the Omicron era: results from a phase IIb open-label extension study up to 6 months

COVID-19

Lopez MJ, Vazquez MM, Alvarez M et al.

Phase IIb HIPRA-HH-2 study results showed that PHH-1V as first booster dose elicited a strong and sustained neutralising antibody response against various SARS-CoV-2 variants. Here, we report the safety and immunogenicity of a fourth booster dose of PHH-1V against the most prevalent Omicron SARS-CoV-2 variants in Spain.

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