Counter reply in reference to “Prevalence of neutralizing antibodies against SARS-CoV-2 using a rapid serological test in health workers of a Spanish Department of Health in Alicante (Spain) before the booster dose of the vaccine” A.C. Montagud, J. Llenas-García, R. Moragues, A. Pérez-Bernabeu, M.J. Alcocer Pertegal, F.J. García Gómez, A.M. Gamayo Serna, H. García Morante, P. Caballero, J. Tuells

Letter to the Editor about “Prevalence of neutralizing antibodies against SARS-CoV-2 using a rapid serological test in health workers before the booster dose of the vaccine” H. Daungsupawong, V. Wiwanitkit

SARS-COV-2 antibodies after booster vaccination. Identification of subgroups with poor response B. Ayuso García, E. Romay Lema, A. Pérez López, A. Suárez Piñera, M.C. Pereiro Belay, M.J. Gude González, R. Rabuñal Rey