Year 9 Science – Survivors DISEASE STATUS: Day 24 Number infected: 2400 Number of deaths: 1847 Number of infected countries: 57

Year 9 Science – Survivors Survivors Lesson 9 – The pandemic strikes back! MRSA video link: deo?id= deo?id= June 30, 2016

Year 9 Science – Survivors Learning Objectives By the end of the lesson, you: MUST know some bacteria are resistant to antibiotics SHOULD understand the dangers of over using antibiotics COULD explain why many doctors wish to limit the prescriptions of antibiotics

Year 9 Science – Survivors TT he WHO have announced that it expects to hear today from the SKHS year 9 scientists if penicillin or streptomycin can be of any help in combatting this deadly disease which is ravishing countries in every part of the world. MM eanwhile as the search for a cure continues the total number of infected has now reached 2400 with a further 1847 know to have now died from the disease.

Penicillin/streptomycin or neither!? Lets look at the plates we treated with antibiotics in lesson 7. Do any of the discs inhibit the growth of the disease microbe? Discuss with your group which, if any of the antibiotic could be used to treat the patients suffering from the disease? Think safety…..what risks are there? How do we control them? Do not open the petri dish!!!!

Year 9 Science – Survivors streptomycin penicillin water

Year 9 Science – Survivors FF ollowing a meeting with the SKHS year 9 scientists the WHO have confirmed the deadly killer disease to be a bacterial infection and have started treating patients with antibiotics containing streptomycin and have also started to put into place mass productions of the antibiotic drug containing streptomycin to combat the spread of the disease around the world. AA n NHS Doctor speaking to sky news had this to say just moments ago “Although it is early days yet the antibiotics appear to be working with a number of infected patients feeling better already”.

DISEASE STATUS: Day 27 Number infected: 2100 Number of deaths: 1860 Number of infected countries: 57

Year 9 Science – Survivors NN ewsflash – The WHO have today released the following statement “Although many previously infected patients have experienced complete recovery after using our new antibiotics, others have not shown any signs of recovery and it would appear that the bacteria has mutated into a streptomycin resistant strain and is coming back stronger than ever. This means that our new antibiotic is now useless against the disease.”

Word bank Write down these key words. Do you recognise any of them. Discuss with your partner what you think they mean: mutateantibiotics resistanceexpose breed unresponsive

Year 9 Science – Survivors How does antibiotic resistance happen and what are the dangers? ucators/lessons/lesson6/act1.html evolution and antibiotic resistancehttp:// ucators/lessons/lesson6/act1.html vnx6dZ3E have a negative effect on childrenhttp:// vnx6dZ3E See if you can recognise any of the key words

Year 9 Science – Survivors Tips for safe antibiotic use Do not demand antibiotics from doctor if unnecessary Do not take for cold, cough or the flu Take antibiotics exactly as doctor prescribes Do not skip doses Finish the prescription as directed

Year 9 Science – Survivors MRSA MRSA (methicillin resistant Staphylococcus aureus) is another example of bacterial infection that has become resistant to antibiotics These antibiotic resistant bacteria are spread very easily in hospitals MRSA alone now causes around a thousand deaths every year in hospital patients who, although ill, might otherwise have recovered. These bacteria are so deadly because without effective antibiotics, infection can quickly lead to serious, life-threatening illnesses, such as pneumonia and blood poisoning (septicaemia).

Year 9 Science – Survivors Mrsa story Questions 1.Is MRSA a bacterium or a virus? Explain your answer. 2. Suggest how MRSA is spread in hospitals? 3. What is meant by the term natural selection when referring to MRSA? 4. List at least two things that can be done to stop the spread of MRSA?

Year 9 Science – Survivors How can we control the spread of these antibiotic-resistant bacteria in hospitals? Doctors, nurses and other medical staff wash their hands between patients. Visitors wash their hands as they come into and leave hospital. Look after patients infected with the bacteria in isolation from other patients. Keep hospitals clean-high standards of hygiene. Medical staff wear either disposable clothing or clothing which is regularly sterilised.

Year 9 Science – Survivors Some reasons for antibiotic resistance Over prescription of antibiotics Patients not finishing course of Antibiotics and thus some of the bacteria survive and mutate to become immune to the antibiotic the patient was taking.

Year 9 Science – Survivors 1.Try to explain how antibiotic resistance occurs? Include the terms: antibiotic, bacteria, mutation, survive, resistance, kill, breed in your explanation. 2.What are the consequences of overuse of antibiotics? 3.Do you have any tips for safe antibiotic use? 4.What are some reasons for antibiotic resistance? 5.What is MRSA and why is it dangerous? 6.How can we control the spread of antibiotic resistant bacteria? Task on Comp: Antibiotic Resistance

Year 9 Science – Survivors Antibiotic resistance 1)Make a powerpoint using pictures (max 6 slides) of how antibiotic resistance occurs. You can use the picture below to help you: 2) Try to explain in each slide how antibiotic resistance occurs? Include the terms: antibiotic, bacteria, mutation, survive, resistance, kill, breed in your explanation.

Year 9 Science – Survivors Mutant plenary! antibiotics bacterium better disease mutation mutate resistant virus If bacteria change or ….…… they become ………. to ……….This means the medicine no longer makes you ……..…. A ……… in a ……… or ……….. can also lead to a new form of ………... mutate resistantantibiotics bettermutationbacterium virus disease