infections and barriers

• Bacteria reproduces cells and relases toxis which make you feel ill
• Viruses reproduce inside the host cell, they are not alive but can cause disease. They live inside your cells and replicate themselvs
• pathogens can be spread by these things

  air

  water

  direct contact
• direct contact- Many diseases are spread by direct contact like HIV. This by sexually transmitted diseases. it can aslo be ctched by cuts, sctaches..
• 1.preventing infections-being hygenic :

  washing hands

  sneezing on a tissue

  using idsinfectant on kitchen
• 2. preventing infection-Isolation

  this can be by staying at home. As fewer healthy people will be in contact with the infected people, so less likely the pathogen will be passed on
• 3. preventing infection-Vaccination:

  This is when they instert a dead or inactive pathogen to your body which causes your body to produce antibodies to attack them . So if a live pathogen of that pathogen does comes you are less likely to kill as there is an antibody spercifically for that pathogen
• 4. preventing infection-Antibiotics: antibiotics kill bacteria which causes many infectious diseases. Antibiotics do not work against viral infections because they only affect living organisms (like us) and not nonliving ones (like viruses).