There are three patterns of acute sinusitis:  Persistent cold symptoms. If symptoms get better in 10 days, the infection is probably viral. âBut if thereâs no improvement after 10 days, itâs likely to be bacterial at that stage,â Dr. Rosenfeld said.
Electric Tools Employees using electric tools must be aware of several dangers. Among the most serious hazards are electrical burns and shocks. Electrical shocks, which can lead to injuries such as heart failure and burns, are among the major hazards associated with electric-powered tools.
What are very toxic materials? Very toxic materials are substances that may cause significant harm or even death to an individual if even very small amounts enter the body. These materials may enter the body in different ways (called the route of exposure). The most common route of exposure is through inhalation (breathing it into the lungs).