Plasmodium falciparum is a protozoan parasite that causes an infectious disease known as malaria. P. falciparum is the most severe strain of the malaria species correlated with almost every malarial death. [1] The other 3 species that cause malaria include: P. vivax, P. ovale, and P. malariae.
To set the value of a Boolean attribute, such as disabled, you can specify any value. An empty string or the name of the attribute are recommended values. All that matters is that if the attribute is present at all, regardless of its actual value, its value is considered to be true.
The when attribute is used to inform ngSwitch which element to display when the on expression is evaluated. If a matching expression is not found via a when attribute then an element with the default attribute is displayed. Be aware that the attribute values to match against cannot be expressions. They are interpreted as literal string values to match against. For example, ng-switch-when=someVal will match against the string someVal not against the value of the expression $scope.someVal.