Infectious disease is the single biggest cause of death worldwide. New infectious agents, such as the SARS, MERS and other novel coronavirus, novel influenza viruses, viruses causing viral haemorrhagic fever (e.g. Ebola), and viruses that affect the central nervous system (CNS) such as TBEV \& Nipah require investigation to understand pathogen biology and pathogenesis in the host. Even for known infections, resistance to antimicrobial therapies is widespread, and treatments to control potentially deleterious host responses are lacking. In order to develop a mechanistic understanding of disease processes, such that risk factors for severe illness can be identified and treatments can be developed, it is necessary to understand pathogen characteristics associated with virulence, the replication dynamics and in-host evolution of the pathogen, the dynamics of the host response, the pharmacology of antimicrobial or host-directed therapies, the transmission dynamics, and factors underlying individual susceptibility. The work proposed here may require sampling that will not immediately benefit the participants. It may also require analysis of the host genome, which may reveal other information about disease susceptibility or other aspects of health status.
Study Type
OBSERVATIONAL
Enrollment
4,415
CHG Agen
Agen, France
Centre Hospitalier Du Pays D'aix
Aix-en-Provence, France
CHU Amiens
Amiens, France
CHU Angers
Angers, France
CH Annecy Genevois
Annecy, France
Hopital privé d'Antony
Antony, France
Clinical features
Describe the clinical features of the illness or syndrome (cardio-respiratory signs or symptoms, and laboratory results) and complications, and determinants of severity. Assessment daily for 15 days, then weekly until max 100 days, then 3 and 6 months.
Time frame: 18 months
Response to treatment
Describe the response to treatments (including supportive care and novel therapeutics) by clinical, biological, radiological and virological assessments. Assessment daily for 15 days, then weekly until max 100 days, then 3 and 6 months.
Time frame: 18 months
Pathogen replication, excretion and evolution, within the host
high-throughput sequencing of pathogen genomes obtained from respiratory tract, blood, urine, stool, CSF and other samples. Assessment on Day 1, Day 2, Day 3, Day 5, Day 7, Day 9, Day 11, Day 13, Day 15 then weekly until max 100 days, then 3 and 6 months.
Time frame: 18 months
Immune host responses to infection and therapy
Characterise the innate and acquired immune responses, circulating levels of immune signalling molecules and gene expression profiling in peripheral blood. Assessment on Day 1, Day 2, Day 3, Day 5, Day 7, Day 9, Day 11, Day 13, Day 15 then weekly until max 100 days, then 3 and 6 months.
Time frame: 18 months
Host genetic variants
Identify host genetic variants associated with disease progression or severity
Time frame: Day 1
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Hôpital de Mercy. CHR METZ-THIONVILLE
Ars-Laquenexy, France
Centre Hospitalier Henri Duffaut
Avignon, France
Chu Jean Minjoz
Besançon, France
Centre hospitalier de Béziers
Béziers, France
...and 88 more locations