The changing of the seasons brings many things: cooler weather, leaves and, in many cases, sickness. Sniffling office mates and coughing kids spread viruses, bacteria and illnesses, and it isn't always easy to tell who is sick. Some people are fortunate to have immune systems that block it all, but for those who worry, some technology - in the form of apps, websites and devices - is here to help.

This app, which works on both Android devices and iPhone, creates a weather map-type interface to predict the risk of getting sick in a particular location. It does this by scanning social media networks for indicators of illness such as cough and fever. It also allows users to share reports and forecasts with others.

This app uses voluntary crowdsourced data that is anonymously self-reported to create a real-time map of flu-like symptoms as well as other types of symptoms.

Available for both Android and iPhone, this app gives the latest real-time disease outbreak information. It covers a wide range, from the flu to bacteria and illnesses caused by mosquitoes and other animals, environmental factors and other sources.

This app uses reports from doctors' offices, hospitals and clinics to assess what sicknesses are in a given area as well as to forecast future illnesses rates.

This company sells a smartphone-linked thermometer to help users figure out what to do when they are sick. By collecting the temperature data of its users as well as other information, it can create illness maps.

For those who are already sick and want to see a doctor, there are apps for that too.

This app connects users in a face-to-face chat with a doctor using a phone or tablet. The goal is to be able to treat some of the most common health conditions such as a cold or flu, allergies and others. It is available for those with and without insurance.

Zocdoc helps users find nearby doctors in their insurance network along with reviews from patients. It covers a range of insurance companies, doctors as well as specialists.

This app and website is currently available in select cities and lets a user schedule a house call with a doctor. The service is available for both the insured and a $99 flat fee for the uninsured. The goal is to give patients and doctors more time together in a comfortable setting.

With advancements in medicine and technology such as lab-on-a-chip and various sensors in smartwatches and other devices, we can expect growth in the list of apps and their accuracy as well as access to online health services.

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