answer the 1st, 2nd and 4th questions
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1. Pneumonia. Because typhoid is non communicable disease and pneumonia is communicable disease.
2. It is hard to make antiviral medicines because viruses have a high tendency to mutate rapidly and virus don 't have their own cell structure and use the host cell to replicate. Bacteria have their own biochemical pathways and is therefore easy to detect it 's presence in our body.
3. Many different immune cells can take part in an inflammation. They release different substances, the inflammatory mediators. These include the tissue hormones bradykinin and histamine. They cause the narrow blood vessels in the tissue to expand, allowing more blood to reach the injured tissue.
2. It is hard to make antiviral medicines because viruses have a high tendency to mutate rapidly and virus don 't have their own cell structure and use the host cell to replicate. Bacteria have their own biochemical pathways and is therefore easy to detect it 's presence in our body.
3. Many different immune cells can take part in an inflammation. They release different substances, the inflammatory mediators. These include the tissue hormones bradykinin and histamine. They cause the narrow blood vessels in the tissue to expand, allowing more blood to reach the injured tissue.
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