SUPERBUGS An intro to bacteria infectious diseases and
SUPERBUGS An intro to bacteria, infectious diseases, and antibiotic resistance
How abundant are bacteria? Bacterial Abundance Total bacteria on Earth Number of stars in the universe Age of the universe in seconds Bacteria in the human gut Global gross product ($/year) Cells in the human body Texts sent in 2009 People on Earth 5 x 1030 7 x 1022 4. 4 x 1017 1 x 1014 7 x 1013 10 X 1 x 1013 1. 5 x 1012 6. 9 x 109
All about bacteria… Help make yogurt, cheese, & wine Involved in environmental recycling and clean-up
How many types of bacteria are there? Bacterial Distribution Insect Species Bacterial species in the soil Bacterial species in the air Bacterial species in the ocean Bird Species Bacterial species in the human mouth Bacterial Species in the human gut Pathogenic Species 1 -10 million 4 million 2 million 10, 000 600 55
Infectious Diseases Pathogen: a biological agent that causes disease Can be a virus, bacteria, fungi, protozoa, or parasite Infectious diseases are communicable or transmissible from one person to another
Virus: Influenza (H 1 N 1) Protist: Malaria (Plasmodium) Fungi: Plant pathogen (Rigidoporus laetus)
Staph Infection: Staphylococcus aureus Mycobacterium tuberculosis Salmonella typhimurium
Antibiotics Compounds that kill bacteria or inhibit their growth Naturally produced by microorganisms to kill others How many are made synthetically
Antibiotics Susceptible vs. Resistant Antibiotic Clearing Lawn
Why is resistance bad? Because you can’t treat the disease! The patient will remain sick
How do you get resistance? Usually from mutation in DNA Genetic mutations can be passed to offspring… Leads to evolution!
Susceptible + Antibiotic Resistant
What can you do to help? Follow the directions! Take antibiotics only when necessary
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