The transmission modes and sources of COVID-19: A systematic review
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Date
2020Author
Sulaiman Rahman, Heshu
Sleman Aziz, Masrur
Hassan Hussein, Ridha
Hassan Othman, Hemn
Salih Omer, Shirwan Hama
Star Khalid, Eman
Abdulrazaq Abdulrahman, Nusayba
Amin, Kawa
Abdullah, Rasedee
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Abstract
The current rampant coronavirus infection in humans, commonly known as COVID-19, a pandemic that
may cause mortality in humans, has been declared a global emergency by the World Health Organization
(WHO). The morbidity and mortality rates due to the pandemic are increasing rapidly worldwide, with
the USA most affected by the disease. The source COVID-19 is not absolutely clear; however, the disease
may be transmitted by either by COVID-19-positive individuals or from a contaminated environment. In
this review, we focused on how the COVID-19 virus is transmitted in the community. An extensive
literature search was conducted using specific keywords and criteria. Based on the published report, it is
concluded that COVID-19 is primarily transmitted human-to-human via oral and respiratory aerosols and
droplets with the virus-contaminated environment play a lesser role in the propagation of disease.
Healthcare providers and the elderly with comorbidities are especially susceptible to the infection.
Palabras clave
COVID-19; Transmission mode; Virus source; Virus load and shedding; Pandemic infectionLink to resource
https://doi.org/10.1016/j.ijso.2020.08.017Collections
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