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# Text highlighting

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The Text highlighting component highlights any text within a pre-defined area that matches case-insensitive search criteria specified through the URL's query string. Supports multi-word strings, including spaces and basic punctuation.

Note: Search criteria using special regex characters such as `"`, `|`, `?`, `+`, `(` or `)` may be partially or fully excluded from the results.

## How Do I Use It?

1. Define your search area. Add the `wb-txthl` class to the tag whose contents you want to search in.
2. Specify the search criteria in a URL query string. Add `txthl=<text_1>+<text_2>+<text_3>` to the query string.
   Note: HTML markup validation requires all spaces in links to be replaced by `%20`.

## Example

### Sample search criteria

- avian influenza
- world
- cook
- flu-like symptoms
- Don't Forget...
- causes sickness in birds, it can also infect people.

#### Query string

    ?txthl=avian%20influenza+world+cook+flu-like%20symptoms+Don't%20Forget...+causes%20sickness%20in%20birds,%20it%20can%20also%20infect%20people.

Highlight example text that meets the search criteria

### Avian Influenza (H5N1) Worldwide

Updated: March 17, 2010

- Travel Health Notice
- About Avian Influenza (H5N1)
- Where is Avian Influenza (H5N1) a Concern?
- Recommendations for Travellers
- Don't Forget...
- Other Related Information

#### Travel Health Notice

Travellers are reminded that countries around the world continue to report cases of avian influenza (H5N1), or "bird flu".

While avian influenza (H5N1) commonly causes sickness in birds, it can also infect people. People who contract avian influenza can get very ill, and more than half die from it.

If you are travelling to a region where avian influenza (H5N1) is known to be present, the Public Health Agency of Canada (PHAC) recommends that you:

1. Avoid all high-risk such as poultry farms and live animal markets.
2. Avoid eating undercooked eggs or poultry.
3. Wash your hands frequently.
4. See a health care provider if you develop flu-like symptoms while travelling or after you return to Canada

#### About Avian Influenza (H5N1)

Avian influenza (H5N1), commonly known as "bird flu", is a viral infection that can spread easily and quickly among birds.

A particularly strong subtype called the Highly Pathogenic (H5N1) has been found in birds in parts of Asia, Europe, the Middle East and Africa. Humans have become infected with this virus.

##### Symptoms

- Can take two to eight days and possibly longer to appear.
- Usually include symptoms similar to human influenza such as fever, cough, aching muscles and sore throat.
- In more severe cases people may develop serious respiratory conditions such as pneumonia which may lead to death. Fatality rates among hospitalized patients with confirmed infection is high (about 60%).

##### Transmission

- Most human cases have been traced to direct contact with live infected birds or their droppings.

#### Where is Avian Influenza (H5N1) a Concern?

- Asia, the Middle East, Europe and Africa have all had outbreaks of avian influenza (H5N1) in poultry since 2003.
- Since 2009, cases of humans having caught H5N1 have been reported from Cambodia, China, Egypt, Indonesia and Vietnam.
- From 2003 to early 2010, there have been nearly 500 confirmed human cases in 15 countries.
- Worldwide, almost 300 people have died from avian influenza (H5N1).

The World Health Organization (WHO) posts information on the total number of human cases of avian influenza and maps of where human cases of avian influenza have occurred.

#### Recommendations for travellers

1. Avoid getting avian influenza (H5N1)
   1. If you are travelling to an area where avian influenza (H5N1) is a concern,
      1. Avoid high-risk areas such as poultry farms and live animal markets;
      2. Avoid unnecessary contact with birds, including chickens, ducks and wild birds
      3. Avoid surfaces that may have bird droppings or secretions on them;
      4. Ensure that all poultry dishes are well cooked, including eggs
2. Wash your hands frequently.
   1. Wash your hands with soap under warm running water.
   2. Alcohol-based hand sanitizer can also be used if soap and water are not readily available. It's a good idea to keep some with you in your pocket or purse when you travel.
3. Monitor your health:
   1. If you develop flu-like symptoms while travelling, or after you return to Canada, you should see a health care provider.
   2. Tell your health care provider that you have been travelling or living in an area where avian influenza (H5N1) is a concern.

#### Don't Forget …

1. Consult a health care provider or visit a travel health clinic at least six weeks before you travel.
2. What to do if you get sick when you are travelling
3. What to do if you get sick after you return to Canada
4. Know what vaccines you need and when to get them

#### Other Related Information

- Public Health Agency of Canada (PHAC) – Fact Sheet: Avian Influenza (H5N1)
- PHAC – Information on Avian Influenza
- Health Canada – It’s Your Health: Avian Influenza (Bird Flu)
- Health Canada – Avian Influenza and Poultry
- Canadian Food Inspection Agency (CFIA) – Animal Diseases: Avian Influenza
- World Health Organization (WHO) – Fact Sheet: Avian Influenza ("bird flu")
- WHO – Situation Updates: Avian Influenza

Date modified:
  2014-02-19