mers cov by dr.kwanchai prasitwutiwej @ chularat 9 hospital kingkaew
DESCRIPTION
องค์การอนามัยโลก (WHO: Wolrd Health Organization) รายงานพบผู้ป่วยยืนยันการติดเชื้อไวรัสโคโรน่า สายพันธุ์ใหม่ 2012 ณ วันที่ 16 พฤษภาคม 2557 รวมแล้วผู้ป่วย 614 ราย เสียชีวิต 181 ราย โดยพบรายงานผู้ป่วยทั้งหมด จาก 19 ประเทศ ดังนี้ จอร์แดน ซาอุดิอาระเบีย กาตาร์ อังกฤษ สหรัฐอาหรับเอมิเรตส์ ฝรั่งเศส ตูนีเซีย เยอรมนี อิตาลี โอมาน คูเวต มาเลเซีย ฟิลิปปินส์ กรีซ อียิปต์ สหรัฐอเมริกา เยเมน ศูนย์ป้องกันและควบคุมโรคของยุโรป (ECDC: European Centre for Disease Prevention and Control)รายงานพบผู้ป่วยยืนยันการติดเชื้อไวรัสโคโรน่า สายพันธุ์ใหม่ 2012 ณ วันที่ 16 พฤษภาคม 2557 รวมแล้ว ผู้ป่วย 621 ราย เสียชีวิต 188 รายTRANSCRIPT
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Middle EastRespiratory Syndrome
Corona virus
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Corona Virus
Coronaviruses primarily infect the upper respiratory and gastrointestinal tract of mammals and birds
Coronaviruses are believed to cause a significant percentage of all common colds in human adults
Coronaviruses can even cause pneumonia, either direct viral pneumonia or a secondary bacterial pneumonia
Coronaviruses also cause a range of diseases in farm animals and domesticated pets
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List of human coronavirus
Human coronavirus 229E Human coronavirus OC43 SARS-CoV Human coronavirus NL63 Human coronavirus HKU1 Middle east respiratory
syndrome coronavirus
Corona Virus
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MERS CoV
1st case June 2012 Kingdom of Saudi Arabia Acute pneumonia with renal failure
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MERS CoV
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MERS CoV All cases have had a direct or indirect link
with the Middle east Median age is 50 yrs, 64.5% were male Majority of patients experience severe
respiratory disease (63.4%) Patients who died had a higher median
age and propotion of male sex Most patients have underlying medical
conditions; chronic kidney disease (13.3%), diabetics (10%), heart disease (7.5%)
The WHO MERS-CoV research group, November 12, 2013
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MERS CoV
Index cases Likely experience
severe and fatal disease
Requiring hospitalization
Secondary cases Most are health
care setting Other in household
setting Cluster occurance
European Centre for Disease Prevention and Control, May 1, 2014
Total cases : 424, Died 131
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Clinical features
Incubation period 5-14 days The duration of hospitalization to discharge 7 days
and to died 9 days, median time 4 days Clinical range from asymptomatic to very severe
pneumonia 1/3 patients had gastrointestinal symptoms
Asymptomatic Pneumonia ARDS Septic shock Multi organ failure
13.5% 44.1% 12.4%
Gastrointestinal symptoms
26%
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Clinical features
Pneumonia Fever Cough Dyspnea Tachypnea Desaturation
Systemic symptoms Myalgia Arthralgia
Gastrointestinal symptoms Nausea Vomiting Diarrhea
Nearly all symptomatic patients presented with respiratory symptoms
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Chest radiograph
Finding vary but are consistent with viral pneumonitis and ARDS
Bilateral hilar infiltrationBilat or unilateral patchy infiltrationSegmented or lobar opacitiesGround glass appearanceSmall pleural effusion
Lower lobes tend to be affected early in the course of illness
Progressive rapidly
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Common laboratory findings
Complete blood countLeukopenia, paticularly lymphopenia
Viral loadGreatest in lower respiratory tract, found in upper respiratory tract and some in blood, urine, stool
Co-infection with other respiratory virusesParainfluenza, rhinovirus, influenza, herpes simplex
Secondary nosocomially bacterial infectionKlebsiella pneumoniae, Staphylococcus aureus, Acinetobacter spp.
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Transmission
Air borne transmission Droplet smaller < 10
micrometres Hang in air like invisible
smoke Droplets are loaded with
infectious particles Anthrax, Varicella zoster,
Mumps, Measles, Rubella, Tuberculosis
Air droplet transmission
Droplet larger > 10 micrometres Do not stay in the air Influenza
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Transmission
MERS CoV
Zoonosis in sporadic case Camel and bat
Human to human transmission in secondary case Small air droplet Transmission did not extend beyond close contacts into the community Secondary attack rates among family members of patients appear to be low
ClusterDefined as two or more persons with onset of symptoms within 14 day period and are associated with specific setting
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Transmission
MERS CoV
Epidemic potential Dose not yet have pandemic potential Sustained epidemic in an animal reservoir with sporadic spill-over into
humans Sustained human to human transmission causing a slowly growing human
epidemic
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Treatment
Absent of pathogen-specific interventions
Management largely depends on provision of organ support and vigilance for and prevention of complications
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Treatment
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Treatment
Organ support and prevention of complication Lung-protective ventilatory strategies for ARDS Sepsis early directed goal therapy Antimicrobial treatment for co-infection Renal replacement therapy Cardiovascular support ECMO
Non useful drug
High dose corticosteroid Interferons, Cyclosporin A, Ribavirin, Nitazoxanide,Immunoglobulins,
Lopinavir SARS CoV convalescent plasma
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Infection control
Standard precautions
Contactprecautions
Air borneprecautionsAir droplet
precautions
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Infection control
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Infection control
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Infection control
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