The Power of Handwashing

Handwashing

The Power of Handwashing.

The Vienna General Hospital and the story of Dr. Ignaz Semmelweis are significant in the history of medicine and the understanding of infection control. Here’s a brief overview of the story:

**Background:**

In the mid-19th century, Vienna General Hospital in Austria was a prominent maternity hospital.

During this time, there was a high mortality rate from childbed fever (also known as puerperal fever) among women who gave birth at the hospital.

Dr. Ignaz Semmelweis:

– Dr. Ignaz Semmelweis was a Hungarian physician who worked at Vienna General Hospital in the mid-1840s.

– He observed a stark difference in maternal mortality rates between two maternity wards at the hospital. The first ward was staffed by medical students and doctors, while the second ward was staffed by midwives.

– The mortality rate from childbed fever in the ward staffed by medical students and doctors was significantly higher than in the midwives’ ward.

**Discovery:**

– Dr. Semmelweis was troubled by the disparity in mortality rates and began investigating the cause.

– He noticed that medical students and doctors often came directly from performing autopsies on deceased patients to delivering babies without properly washing their hands.

– He hypothesized that there might be some kind of “cadaverous particles” on their hands that were causing the infections in mothers.

– To test this theory, he implemented a simple but revolutionary practice: he required doctors and students to wash their hands thoroughly with a chlorine solution before attending to patients.

**Results:**

– After implementing handwashing, the mortality rate in the ward staffed by doctors and students dropped significantly.

– The results of Semmelweis’ handwashing experiment were remarkable and demonstrated that basic hygiene practices could save lives.

**Legacy:**

– Dr. Semmelweis’s findings laid the foundation for the importance of hand hygiene in healthcare settings.

– Unfortunately, during his time, his ideas were met with skepticism, and he faced resistance from the medical establishment.

– It was only in the late 19th century and beyond that the significance of his work was fully recognized.

– Today, Ignaz Semmelweis is celebrated as a pioneer in the field of infection control, and handwashing is considered one of the most critical measures to prevent the spread of infections in healthcare settings.

The story of Dr. Ignaz Semmelweis and Vienna General Hospital underscores the importance of evidence-based medicine, hygiene practices, and the potential consequences of ignoring medical discoveries.

Cyclistic Project

Project Cyclistic

In 2016, Cyclistic launched a successful bike-share offering. Since then, the program has grown to a fleet of 5,824 bicycles that are geotracked and locked into a network of 692 stations across Chicago. The bikes can be unlocked from one station and returned to any other station in the system anytime.

Until now, Cyclistic’s marketing strategy relied on building general awareness and appealing to broad consumer segments. One approach that helped make these things possible was the flexibility of its pricing plans: single-ride passes, full-day passes, and annual memberships. Customers who purchase single-ride or full-day passes are referred to as casual riders. Customers who purchase annual memberships are Cyclistic members.

Cyclistic’s fi nance analysts have concluded that annual members are much more profitable than casual riders. Although the pricing flexibility helps Cyclistic attract more customers, Moreno believes that maximizing the number of annual members will be key to future growth. Rather than creating a marketing campaign that targets all-new customers, Moreno believes there is a very good chance to convert casual riders into members. She notes that casual riders are already aware of the Cyclistic

program and have chosen Cyclistic for their mobility needs.

The point of using dummy text for your paragraph is that it has a more-or-less normal distribution of letters. making it look like readable English.

The point of using dummy text for your paragraph is that it has a more-or-less normal distribution of letters. making it look like readable English.

Rise and Fall of Programming Languages


Project Description

How can you tell what programming languages and technologies are used by the most people? How about what languages are growing and which are shrinking, so that you can tell which are most worth investing time in? One excellent source of data is Stack Overflow, a programming question and answer site with more than 16 million questions on programming topics. By measuring the number of questions about each technology, you can get an approximate sense of how many people are using it. In this project, you’ll use open data from the Stack Exchange Data Explorer to examine the relative popularity of languages like R, Python, Java and Javascript have changed over time.

Project Tasks

  1. Data on tags over time
  2. Now in fraction format
  3. Has R been growing or shrinking?
  4. Visualizing change over time
  5. How about dplyr and ggplot2?
  6. What are the most asked-about tags?
  7. How have large programming languages changed over time?