Oak processionary the same manner. Oak is its preferred food source, but the moth also eats the leaves of hazel, hornbeam, sweet chestnut, birch and beech. The moths pose an increasing threat to humans as their range is extended. The backs of older caterpillars (3rd to 6th instars) are covered with up to 63,000 pointed defensive bristles, which contain an urticating toxin (e.g., the protein thaumetopoein). The setae break off readily, become airborne and can cause epidemic caterpillar dermatitis (lepidopterism), manifested as a papular rash, pruritus, conjunctivitis and, if inhaled, pharyngitis and respiratory distress, including asthma or even anaphylaxis; however, as of
Health human resources of increasing debate on international health worker recruitment, especially in some higher income countries, and its impact on the ability of many developing countries to deliver primary health care services. Although non-binding on the Member States and recruitment agencies, the Code promotes principles and practices for the ethical international recruitment of health personnel. It also advocates the strengthening of health personnel information systems to support effective health workforce policies and planning in countries. Health human resources Health human resources (HHR) – also known as human resources for health (HRH) or health workforce – is defined as "all people engaged in