Children engaged in child labour in tobacco growing are involved in many types of tasks, as shown in the Report on Child Labour in the Tobacco Growing Sector in Africa (2000). Childrenâs health, wellbeing, and opportunities for a better life are often the cost of childrenâs involvement in hazardous child labour. 2  Child labour in tobacco growing can pose health risks, including green tobacco sickness, which can cause fatigue and nausea.
Clinical Features The incubation period of pertussis is commonly 7â10 days, with a range of 4â21 days, and rarely may be as long as 42 days. The clinical course of the illness is divided into three stages.
Type C has been found in humans, pigs, and dogs and causes either a very mild illness, or has no symptoms at all. It does not cause epidemics and does not have the severe public health impact that influenza types A and B do. The typical incubation period for influenza is 1 to 4 days, with an average of 2 days.Adults can be infectious from the day before symptoms begin through approximately 5 days after illness onset.Children can be infectious for. The incubation period of swine flu is one to 7 days. 2  People may be contagious from one day before they develop symptoms to up to 7 days after they get sick. 3  There are two influenza antiviral medications that are currently effective against H1N1 flu.