This is a prospective, randomized placebo-controlled double blinded clinical trial in frontline healthcare workers managing COVID-19 patients. Participants will be weekly tested for SARS-CoV-2 and a panel of respiratory viruses. Treatment will be 3times a day for 84 days one puff into each nostirl and 3 puffs into mouth. Daily a symptom score will be recorded. The primary objective of the trial is to demonstrate that prophylactic treatment of health care workers managing COVID-19 patients with iota-carrageenan reduces symptoms of SARS-CoV-2 infections as well as infections with other respiratory viruses when compared to a placebo-treated control group.

NCT04681001

Conditions

1. Respiratory Viral Infection
2. Common Cold
3. Severe Acute Respiratory Syndrome (SARS) Pneumonia
4. COVID-19
5. Corona Virus Disease

Interventions

1. Device: Coldamaris pro, nasal spray

MeSH:Infection Virus Diseases Severe Acute Respiratory Syndrome Coronavirus Infections Common Cold Pneumonia

HPO:Pneumonia

weekly assessment of SARS-CoV-2, Influenza A, Human Metapneumovirus, Influenza A - subtype H1, Adenovirus, Influenza A - subtype H3, Parainfluenza 1, Influenza A - subtype 2009 H1N1, Parainfluenza 2, Influenza B, Parainfluenza 3, Parainfluenza 4, Coronavirus HKU1, Respiratory Syncytial Virus A, Coronavirus N63L, Respiratory Syncytial Virus B, Coronavirus OC43, Rhinovirus/Enterovirus, Coronavirus 229E, Human Bocavirus, Chlamydophila pneumoniae, Mycoplasma pneumoniae, Legionella pneumophila. --- N63L ---

nasal spray into mouth Weekly sampling for testing of SARS-CoV-2 and respiratory virus panel (Influenza A, Human Metapneumovirus, Influenza A - subtype H1 Adenovirus, Influenza A - subtype H3 Parainfluenza 1, Influenza A - subtype 2009 H1N1, Parainfluenza 2, Influenza B Parainfluenza 3, SARS-CoV-2 Parainfluenza 4, Coronavirus HKU1 Respiratory Syncytial Virus A, Coronavirus N63L, Respiratory Syncytial Virus B, Coronavirus OC43, Rhinovirus/Enterovirus, Coronavirus 229E, Human Bocavirus) At begin and end of trial blood samples will be taken for differential blood count and for serology. --- N63L ---