A number of vaccine developers are currently developing vaccines against the range of variants, while others are attempting to develop multivalent or pan-specific vaccines, which may protect against future variants. Regulators have agreed that review of data on vaccines against variants will be facilitated based on assessment of immune response to the variant, in the same way that new seasonal influenza vaccines are evaluated each year. However, evidence to date suggests that for people who are not immunocompromised, three doses of the current vaccines provided robust protection against serious illness, hospitalisation or death from the Omicron variant.
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(f) Standby rescue persons are required whenever one-piece atmosphere-supplying suits, or any combination of supplied air respiratory protection device and personnel protective equipment are used from which an unaided individual would have difficulty extricating himself or herself. The standby persons must be equipped with respiratory protection devices or other apparatus appropriate for the potential hazards. The standby rescue persons shall observe or otherwise maintain continuous communication with the workers (visual, voice, signal line, telephone, radio, or other suitable means), and be immediately available to assist them in case of a failure of the air supply or for any other reason that requires relief from distress. A sufficient number of standby rescue persons must be immediately available to assist all users of this type of equipment and to provide effective emergency rescue if needed.
For each radionuclide Table 1 indicates the chemical form which is to be used for selecting the appropriate ALI or DAC value. The ALIs and DACs for inhalation are given for an aerosol with an activity median aerodynamic diameter (AMAD) of 1 μm and for three classes (D,W,Y) of radioactive material, which refer to their retention (approximately days, weeks or years) in the pulmonary region of the lung. This classification applies to a range of clearance half-times of less than 10 days for D, for W from 10 to 100 days, and for Y greater than 100 days. The class (D, W, or Y) given in the column headed \"Class\" applies only to the inhalation ALIs and DACs given in Table 1, columns 2 and 3. Table 2 provides concentration limits for airborne and liquid effluents released to the general environment. Table 3 provides concentration limits for discharges to sanitary sewer systems.
Note 2 of this appendix provides groupings of radionuclides which are applicable to unknown mixtures of radionuclides. These groupings (including occupational inhalation ALIs and DACs, air and water effluent concentrations and sewerage) require demonstrating that the most limiting radionuclides in successive classes are absent. The limit for the unknown mixture is defined when the presence of one of the listed radionuclides cannot be definitely excluded either from knowledge of the radionuclide composition of the source or from actual measurements.
PERSEREC has worked with the National Opinion Research Center from 1993 until 1998 to define the climate of public opinion in which government security policy is developed. Security-related items have been included in the 1994, 1996, and 1998 General Social Surveys concerning how much protection should be provided for national security information, the appropriate areas of inquiry for establishing eligibility for positions of trust, and acceptable methods for monitoring cleared employees. This report summarizes attitude trends and magnitudes of public support on these issues across the 4-year time span. In general, the data show that there is a solid and sustained endorsement for protecting various categories of national security information and a strong and continuing support for investigative inquiry into personal areas such as finances, mental health, criminal history, and substance abuse. Espionage is clearly perceived to be a serious crime that should warrant severe sentencing after conviction. However, there is mixed and uncertain support for security measures to ensure the continued reliability of cleared employees. 59ce067264