Abstract: In the invention is provided a polypeptide comprising at least 75 amino acids and having an amino acid sequence having at least 90%, such as at least 95%, 96%, 97, 98%, or 99%, such as 100% sequence identity (% SI) with human Angiotensin-converting enzyme 2 (ACE2) (SEQ ID NO 1), for use in the treatment of COVID19, SARS, or MERS, characterized in that the polypeptide is administered pulmonary and/or nasally. Further is provided the polypeptide for use in reducing the number of active virus particles being exhaled by a treated subject infected by SARS-CoV-2, SARS-CoV, or Mers-CoV. Also a dry powder or an aerosol comprising the polypeptide.

Abstract: An apparatus for the multiple analysis of gases which can react with another gas to produce emission of light has at least two reaction chambers (1a, 1b), a single photodetector (3) and an optical redirection system (2) with a reflection surface movably mounted between the reaction chambers for sequentially and rapidly redirecting the light from the two reaction chambers onto the single photodetector for evaluation.