2. SHORT HISTORY
• in 2003, when the severe acute respiratory
syndrome coronavirus (SARS-CoV) caused an
outbreak in mainland China and Hong Kong.
• in 2012, the Middle East respiratory syndrome
coronavirus (MERS-CoV) led to an outbreak of
Middle East respiratory syndrome (MERS) in
Saudi Arabia, the United Arab Emirates.
a pandemic of respiratory disease recorded
around 1890 in human history.
3. • In 2020 coronaviruses became a household name
all over the world. A severe acute respiratory
syndrome coronavirus-2 (SARS-CoV-2), or COVID-
19 Or Novel COVid-19.Novel coronavirus
identified as the cause of coronavirus disease
2019 (COVID-19) that began in Wuhan, China in
late 2019 and spread worldwide.
• All coronaviruses are zoonotic. They start off in
animals and can then, following mutation,
recombination and adaptation, be passed on to
humans.
6. Transmission of COVID-19
• initially transmitted from animals to humans
• Person-to-person spread occurs through
– contact with infected secretions
– contact with a surface contaminated by
respiratory droplets
– Sneezing
– Coughing
– touching
10. Treatment
• Supportive
• No vaccine, antiviral drug, or other specific
treatment is available.
• To help prevent spread from suspected cases,
health care practitioners should use standard,
contact, and airborne precautions with eye
protection.