Week 1 discussion 2

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Week 1 discussion 2

In 1878, congress authorized the US Marine Hospital Service, the precursor to the Public Health Service, to collect morbidity reports on cholera, smallpox, plague, and yellow fever from US consuls overseas. For the most part, these diseases have been eradicated, but the National Notifiable Diseases Surveillance System remains in place.

Using the CDC Morbidity and Mortality Summary of notifiable infectious diseases (
Links to an external site.
), select three diseases and investigate and analyze the number of cases reported in three consecutive years. Explain the reason these diseases are included on the surveillance list, and then analyze the most recent three years of data addressing trends in the statistics for all three diseases.

Visit the 
NNDSS page
Links to an external site.
 on the CDC’s website and investigate the case definition.

Things to reply to


Hello Everyone,

The cases that I have chosen to look at from the CDC website on notifiable infectious diseases are Lyme disease, Syphilis, and Measles (Rubeola). The reason why CDC keeps track of all old and new cases allows the public and health service to know if there is an increase as well as decrease. The CDC keeps records of all diseases all well as ones that we rarely see due to vaccines. The diseases that I choose still are constantly reported so we know where and how the disease is spreading in certain areas or regions. Lyme disease is a vector-borne disease and is the most common in the US and transmitted through tick bites. Syphilis is a sexually transmitted disease. Measles is highly contagious and spreads through coughing and sneezing at close contact. Measles unlike the other two does have a vaccine, but continues to plague the world. In hope with this data is to help the communities as well prevention in hospitals and providers offices.

Lyme Disease

The data from the CDC Lyme Disease Report Card can give you the visual on the amount of infection that is reported every year. In 2018 the number of confirmed cases was 23,558, and in 2019 there were 23,453 reported cases and finally in 2020 there were 12,123 confirmed cases. It also shows that there have been over 20,000 confirmed cases last year and just dropped down dramatically this year.


The data from the CDC Syphilis Report Card also gives you a variety of visuals from bar to graphs and also has a breakdown of each state confirmed case. For the year of 2018 there were 116,183 confirmed cases, in 2019 there were 130,845 confirmed cases and in 2020 there were 134,836 confirmed cases. This was the opposite of Lyme Disease data in the sense that in the last 10 years the amount of confirmed cases has been rising in number.


The data from the CDC Measles Report Card was a lot simpler and could only find graph bars. For the year of 2018 there were 375 confirmed cases, in 2019 there were 1,274 confirmed cases, and in 2020 there were 13 confirmed cases. Also included information why there is an increase and decrease like in 2019 when it jumped so high was mostly affecting unvaccinated individuals. 

Reply 2

Hello Class,

I looked into the year 2000 to 2002 on three infectious diseases which is Hepatitis A, Tuberculosis, and Tetanus. Hepatitis A is highly contagious that infects the liver. Tuberculosis is not contagious, however, is a serious bacterial infection that affects the lung. Tetanus is also a serious bacterial infection that causes muscle spasm that are painful. All three infectious disease are rare and can be preventable with a vaccination.

2000: Hep A in 2000 showed that it was reported the lowest record ever at a rate of 4.9 out of 100,000. It is mentioned that the rate varies year by year and from region to region, therefore it is not consistent. Tuberculosis rate is 6/100,000 with a total case of 16,377. There is a 7% decrease in number of cases from previous year and 39% the year before that Tetanus showed 35 cases were reported in 19 states.

2001: Hep A has decreased its rate at 4.0 out of 100,000. It is still being recommended for routine vaccination as it is at a lower rate. It is highly recommended for people who are at risk of getting Hep A. Tuberculosis decreased at 15,989 cases (2%) from previous year. Tetanus showed an increased from previous year at 37 cases that had been reported from 15 states.

2002: Hep A has decreased more at a rate of 3.1 out of 100,000. Tuberculosis decreased a bit at 15,075 cases at a rate of 5.3 out 100,000. Tetanus had a total of 25 cases that was reported at 14 states.

In 2019, tetanus still shows a double digit number at 26 cases in the U.S that was reported at 19 states. It appears the number increased of states. Florida is the state that had the most case at 4. Tuberculosis had a decrease of 8916 cases in the U.S. Hepatitis A has shows 18,846 cases, which I find surprising, especially that there is a vaccine.



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