The Johnson & Johnson Covid Vaccine – How It Works

The Johnson & Johnson vaccine is an adenovirus vector vaccine. Johnson & Johnson has been researching adenovirus vector vaccines for other infections for decades, including the company’s Ebola vaccine, which is already in use.

The Johnson & Johnson vaccine works similarly to the Pfizer and Moderna mRNA vaccines, though it uses a different type of messenger to deliver instructions for making an immune response. To make the Johnson & Johnson vaccine, scientists took a gene from the virus that causes COVID-19 and put the gene into an adenovirus. The adenovirus used in this vaccine causes the common cold, but the virus was modified so that it cannot multiply in humans or cause infection.

Here is how the Johnson & Johnson vaccine works:

  1. When the vaccine enters your body, the adenovirus carries a gene from the coronavirus into human cells, which then make a COVID-19 protein, but not the virus itself.
  2. The proteins that are produced trigger your body to make antibodies (special proteins that fight against a specific infection) and other defenses.
  3. If you are exposed to COVID-19 after you are vaccinated, your body will recognize the virus and your immune system will be ready to fight it.

Johnson & Johnson Vaccine Ingredients

The Johnson & Johnson vaccine contains the following types of ingredients:

  • Stabilizers: Salts, alcohol, polysorbate 80 and hydrochloric acid.
  • Manufacturing biproducts: Amino acids.

The vaccine does not contain:

  • Antibiotics
  • Blood products
  • Fetal tissue or human cells
  • Gelatin
  • Gluten
  • Mercury
  • Microchips
  • Pork or other animal products
  • The virus that causes COVID-19

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