How can pathogens spread?

Related Questions

What is an artificial heart? What is 'The Human Cost'? How is cancer caused? What does it mean if a disease is 'communicable'? What are the risk factors for lung disease? What are pathogens? What are the two bacterial diseases? How can the spread of diseases be reduced? What are viral diseases? What are the advantages and disadvantages of vaccination? What drugs relieve symptoms and what drugs actually cure the problem? What is the role of the immune system? What is a placebo? Why are placebos used in drug trials? Why is there hair and mucus in the nose? What does the stomach produce to kill pathogens? What does it mean when the clinical trial double blind? What is antibiotic resistance? What is the classification system? Why is it important that people take the full course of antibiotics? Where can antibiotics be prescribed inappropriately? What are anticoagulants? What are the two types of diseases? What is the difference between communicable diseases and non-communicable diseases? What is a pathogen? How do viruses cause disease? How is a virus different from bacteria? What is the lytic pathway? What iss the difference between the lytic pathway and lysogenic pathway? How can HIV spread? How can the spread of HIV be reduced? What are placebos? What are myeloma cells? What are the risks for developing a non-communicable disease? How does exercise affect the risk of non-communicable disease? What is a deficiency disease? How is body mass index calculated?