Seroprevalence of antibodies against SARS-CoV-2 among health care workers in a pediatric monographic hospital in Madrid (Spain) Eva Escribano Ceruelo; Marco Antonio Espinel Ruíz; Marta Ortega López-Peláez; Bárbara Fernández Garoz; Julia Asensio Antón; Raquel Jiménez García;

New COVID-19 vaccination recommendations in Spain: Optimizing for next seasons Pilar Arrazola; María Fernández Prada; Ángel Gil; José Gómez Rial; Cristina Hernán; Rosario Menéndez; Antoni Trilla; Raúl Ortiz de Lejarazu;

Executive summary: Clinical practice guidelines on the management of resistant tuberculosis of the Spanish Society of Pulmonology and Thoracic Surgery (SEPAR) and the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC) Adrian Sanchez-Montalva; José Antonio Caminero; Mª Remedio Guna; Teresa Rodrígo Sanz; Ramón Rabuñal; Joan Pau Millet; José Antonio Gullón-Blanco; Luis Anibarro; Guillermo Perez-Mendoza; Juan Francisco Medina; Verónica González-Galán; Eva Tabernero;