Is a nurse's touching of female patients in the respiratory diseases ward for treatment, with no other intention, considered unlawful (haram), and is his salary in this case also unlawful?

The basic principle is that a woman should nurse a woman. However, if there is no female nurse available, it is permissible for a man to do so, provided that the following Sharia-compliant controls are adhered to: he should limit his gaze to the area of need only, he should not touch the patient's body except with a barrier such as gloves, his speech with her should be limited to what is necessary, and he should not be alone with her. Rather, her mahram or another woman must be with her. It is advisable to strive to limit your work to nursing men only.