Response 1
Indeed, with vector transmission, vectors play a central role by ingesting disease-causing microbes and transmit the pathogen to a susceptible host after the pathogen has undergone replication. Indeed, there are two major types of vectors i.e. mechanical and biological vectors. As you have mentioned, mechanical vectors carry pathogens to susceptible hosts without them being infected while biological vectors get infected first and transmit the pathogen to a susceptible host (Shaw & Catteruccia, 2019). I agree that an example of a mechanical vector is a housefly which carries pathogens such as cholera causing bacteria to food and water which when caused by humans they get infected with cholera. I also agree that an example of a biological vector is a mosquito which transmits pathogens to humans via bites causing illnesses such as malaria and Zika.
References
Shaw, W. R., & Catteruccia, F. (2019). Vector biology meets disease control: using basic research to fight vector-borne diseases. Nature microbiology, 4(1), 20-34. doi: 10.1038/s41564-018-0214-7
Response 2
Indeed, with contact transmission, a susceptible host must come into close contact with an infected person for disease transmission to occur (Richard et.al, 2017). I further agree that in most cases, the pathogens must come into contact with mucous membranes to gain entry into the body, making hand and environmental hygiene important in preventing the spread of infectious diseases. I agree that MRSA is a respiratory disease-causing organisms that is spread through both direct and indirect contact mechanism. As with air-borne transmission, infectious agents from an infected person are released into air via talking, sneezing or coughing and taken up by a susceptible individual. I agree that Tuberculosis, a bacterial disease, is an airborne disease and taking proper respiratory precautions and observing hand hygiene are important in limiting its spread.
References
Richard, M., Knauf, S., Lawrence, P., Mather, A. E., Munster, V. J., Müller, M. A., … & Kuiken, T. (2017). Factors determining human-to-human transmissibility of zoonotic pathogens via contact. Current opinion in virology, 22, 7-12. doi: 10.1016/j.coviro.2016.11.004