Is the Coronavirus More Contagious Than the Flu?

Following are the characteristics of COVID-19:

• Coronaviruses are considered zoonotic, that is, they are transmitted between animals (bats and pangolins) and humans.
• Coronaviruses are well structured with protein spikes that project from their surfaces forming a crown-like shape.
• They cause severe illness by causing the body to release toxic substances and harm its own lung and heart tissue (cytokine storm).

Symptoms can be mild, moderate, and high depending on the extent of infection and individual affected. Coronavirus is transmitted through close contact with droplets from cough and sneeze. It takes an average of 14 days for the symptoms to become visible, but it could also take longer depending on the body’s capacity to endure the virus. The human body recognizes foreign pathogens that enter the body and eliminates them by increasing the body temperature, producing factors that fight the virus. This is the infectious stage where a person starts to manifest symptoms such as cough, fever, and severe throat pain. At this stage, the infection is highly contagious and can be actively transferred through droplets, aerosols, and secretions. The typical symptoms of COVID-19 include:

• Dry cough
• Fever (temperature >98.96°F)
• Fatigue
• Throat pain
• Severe pain: back pain, joints, headache, and muscle aches
• Diarrhea
• Conjunctivitis (inflammation of the eyes)
• Hallucinations
• Memory problems
• Skin rash or discoloration of fingers or toes
• Loss of smell
• Breathing difficulty
• Chest pain or chest discomfort
• Pneumonia (lung infection)
• Lung failure
• Septic shock

The common tests to detect COVID-19 include:

• Reverse transcription-polymerase chain reaction (RT-PCR) test
• Antibody detection test

The RT-PCR test is done on a nasal swab collected in the suspected person and is the best test to detect infection. Other tests are done on the blood sample.

Mild to moderate symptoms in healthy individuals are treated by managing fever and by anti-allergic medications. Plenty of fluids and rest are essential.

In patients with reduced blood oxygen levels and potential for developing lung disease, anti-viral medications such as remdesivir (currently the only U.S. Food and Drug Administration (FDA)-approved drug against COVID-19), baricitinib (can be only used in combination with remdesivir), and dexamethasone may be used under careful monitoring in intensive care unit (ICU) settings.